Side sealing bags are made using center fold film. The bag forming machine simultaneously cuts and seals the sides of the bag. Handles or air holes can be formed prior to the cutting and sealing operation, there are a number of variations on the side seal process.
Benefits of Side Sealing Bag
How does the unique design of side sealing bag maximise product volume and reduce waste?
The ingenious design of side sealing bag makes the most of the space within the bag. This is quite essential in reducing the wastage of material and hence minimising the impact of increased load on the environment due to packaging.
The pouch's core seal has two functions: It increases the pouch's capacity to maintain the product's freshness and lengthens its shelf life. Because the items last longer and stay in excellent condition until consumption, there is less waste as a result.
Enhancing consumer convenience with easy access features of side sealing bag
The inclusion of a tear notch, which greatly improves user convenience, is one of the unique features of the side sealing bag. It is very easy for the package to be opened by the consumer to access the product. The tear notch is a convenient feature but is much involved in the security part of the product.
Cost-effective production and distribution: The economic advantages of 3-side seal pouches
Side sealing bag is a practical and economical solution for businesses from both a material use and manufacturing perspective. Compared to their counterparts, these pouches use less material, which lowers production costs. The single-sheet design gets rid of the need for extra seals or intricate folds, which can raise production costs and make manufacturing more difficult.
These, in practice, translate to cost savings in business as they contribute to environmental sustainability. Benefits are both economic and ecological, making it a fairly viable and attractive option to companies that seek to increase their operation efficiency and market appeal.
Customisation and branding flexibility offered by side sealing bag
The major aspect of the packaging that consumers seem to highly appreciate is the ‘personal touch.' and the side sealing bag fits perfectly in this dimension. Their flat surfaces are that the brand can either use for its message display a logo or even create any appealing design that will catch the consumer's eye.
These further advanced the process of customisation, which made it much easier for the brands to affordably order small amounts of design customisation. This flexibility allows the business to try a different aesthetic or seasonal branding without having to spend a fortune on it.
Superior protection and freshness preservation capabilities of side sealing bag
Protecting the product's integrity and shelf life is the main concern of the manufacturer, and here comes a side sealing bag. 3-side seal pouches are made of such materials that suffice to serve as a good barrier to the transmission of moisture, air, or other spoilage agents from the environment to products. And so, the tight seal, ensures there is no possibility for the contents to be exposed to contaminants and damages from outside. This, in the process, is most crucial for food products, since exposure to air can be the leading cause of spoilage.
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4 Side Vacuum Seal Storage Bag
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Why Choose us
Customer-focused
The company adheres to a business philosophy of continuous improvement, treating every customer with utmost seriousness before sales and providing the most suitable packaging solutions.
Quality Assurance
During the sales process, we strictly control each production stage to ensure customer orders are completed with both quality and accuracy. After sales, we ensure product traceability and actively resolve any issues to promote long-term and stable relationships with our customers.
Experience and expertise
Our company has been in business for many years and has amassed significant expertise and experience to provide quality services to our clients.
Plastic bottom seal bags
Plastic bottom seal bags that manufactured in vietnam are made from flat plastic tubes. The forming machine will seal and cut at the bottom of the bag. Before this stage, die cut, handle, air hole of the bag can also be operated depending on the intended use.
This type of bag can be used to store heavy, leak-proof items. Bottom seal bags can be used to store fruit, food, and garbage. In addition, to increase the storage space, they can be designed with side gusset.
Plastic side sealing bags
Plastic side sealing bags manufactured in vietnam are made by center fold film. The plastic tube film is cut in the middle with a knife. The cutting position is the mouth of the plastic side seal bag. The two sides of the bag will be heat-sealed
The plastic side sealing bags are widely used in trade show centers, used as multi-purpose bags that can be used for many different purposes. With larger bags, people often design with an additional bottom gusset.
Side sealing bags should only be used to store light and small products. If you intend to carry heavier items, consider plastic bottom seal bags.
Printing Options for Side Sealing Bag
Rotogravure Printing
Also referred to as gravure printing is a printing method that uses cylinders that are engraved on their surface.
The depressions on the metal cylinder surface form the design pattern to be transferred on the side sealing bag.
As the cylinder rotates it is dipped into an ink tray where the patterned depressions collect ink and excess removed.
A second cylinder; impression cylinder then moves the object to the gravure cylinder to apply the pattern.
Once the printing area is done it is moved to a drying area before it is ejected from the rotogravure machine.
It is an expensive printing option ideal for high volume printing orders.
Digital Printing
This involves direct printing of digital images or text on media surface such as plastic, paper, fabric, etc.
The image to be printed is sent to the digital printing machine as a digital file in form of PDF.
The artworks to be printed are created digitally using computer software hence eliminating several steps present in traditional printing methods.
Digital printing machine utilizes cyan, magenta black and yellow (CMYK) colors to print the images or texts.
Digital printing option is cost-effective, faster, ideal for small orders, and leaves a clear high-quality finish.
Flexographic Printing
This is almost similar to the rotogravure printing method but uses flexible plates as opposed to engraved cylinders.
The flexible plates are wound around the rotating cylinders with the patterns on raised areas.
The raised parts are then inked one color per cylinder and then pressed against the side sealing bag surface to transfer the images.
This printing option is cheaper than the gravure method and works well with plastic surfaces.
What Are The Different Types Of Side Sealing Bag?
Stand Up Pouches
Stand up pouches are perhaps the most well known and accessible version of side sealing bag. They are called stand up pouches because, well, they stand up! You’ve probably seen these in the grocery store with resealable granola pouches.
The tops usually have a "tear-off" tab that, once removed, allows the package to be sealed and then reopened as needed until the product inside has been depleted.
They also usually have a plastic zip-lock below the tear-off tab, which allows for them to be resealed. Stand up pouches made for liquid packaging applications often feature a plastic cap similar to those found on plastic water bottles.
Gusseted Pouches
Gusseted pouches are a variation on stand up pouches. With gusseted pouches, there are semi-oval shaped indents on both sides of the pouch which make for a square or rectangle base.
This allows them to stand up but in a different fashion from traditional stand-up pouches. The tops of the bags often feature a different kind of resealability.
The tops of the pouches are pushed together and then folded down repeatedly until they reach a section with a glue or other sticky material. The fold sticks to the glue and is sealed until your customer opens the pouch.
Side Gusseted Pouches VS Bottom Gusseted Pouches
Now when it comes to gusseted pouches, there are two main varieties: side gusseted pouches and bottom gusseted pouches. Side gusseted pouches are the ones usually used for coffee and feature the two flat panels on the front and back with the gussets on the left and right side.
The flat panels on the back and front are where the central imagery, branding, and graphic art aesthetics are focused. The front panel is pointing outward on store shelves, facing anybody walking down the aisle. The back panel usually has text explaining the product, nutritional information, and consistent branding to the front of the pouch.
Pillow Pouches
Pillow pouches are one of the longest-running types of side sealing bag on the market. For decades products like potato chips, crackers, individual snack packs, single-serving coffee, and other types of smaller servings of food have been packaged this way.
3 Side Seal Pouches
Three side seal pouches are made of two pieces of metal foil or one side being a metal foil and the other clear plastic. This style of pouch is sometimes made of paper as well (see below). The two sheets of material are placed on top of each other and then heat-sealed on three sides.
The top or bottom of the pouch is left open for filling. Afterward, the pouch is completed with a tear-away lid. This makes it easy for the consumer to open the pouch after purchase.
Three side seal pouches are often used for packaging beef jerky, spices, pet food, cannabis and other edible and non-edible products. Three side seal pouches can also be equipped with hang holes and resealable zippers similar to those found on stand up pouches.
Liquid Pouch Packaging
Liquid pouches include several different variations made specifically for liquid packaging applications. They can be stand up, three side seal, burst, or dual component pouches.
Burst pouches are usually 100% clear pouches used for containing industrial, non-edible liquids and powders. Dual component pouches are burst pouches that contain two or more connected and seal separated pouches. These contain multiple industrial liquids or powders that are needed in tandem for specific applications.
Cut
So the first cut is made along the length, where the front of the pack is separated with the back. We now have two rolls of continuous sheets. One containing the front packaging design and the other containing the back labels. These rolls are now aligned on the side sealing bag machine in such a way that the front and back of our to-be-pouch are facing in opposite directions. Just as they would facing if they were a pouch.
Seal
Once they are aligned, they need to be sealed. So the sheets go through an impulse sealer where two sheets (usually plastic, since we most side sealing bags are made of plastic.) are placed on one another and pressed with heat. These two sheets are then pressed together thus sealing the two sheets. This process is done along the length of both the edges of the sheets, and also along the breadth where a new pack starts. Remember I told you the length is a repetition of the same sheet? So wherever a new sheet starts, it will be sealed. This seal is usually broader since it will serve as a seal to two pouches.
Cut
The seals along the breadth are now cut hence making individual pouches.
A three side seal bag is another product that is made with a similar manufacturing process. But this is the standard manufacturing method for side sealing bags. Sometimes according to the product, extra steps may be added to the process. For example if the product requires a three side seal flat pouch with zipper then a zipper may be added. Sometimes the product needs reclosable zippers, or tear notches or hang holes all of which are possible by making small changes to the machine settings. Sometimes the product is packed and sealed from all sides, which makes it a side sealing bag.
A side sealing bag is a pouch which gives more space for the product and a better structure to a pouch to stack. Another variation of a pouch is a stand up pouch. Another pouch is the spout pouch which comes with a spout. Air bubble pouches and zip lock pouches are just variations of pouches. These pouches are great for candy, chips, purees, pet food and other non-food items too.
Determine the right size for your side sealing bag
One of the biggest mistakes people make when selecting their first side sealing bag is that they misjudge the size needed. Volume is important when selecting the right sized pouch. For example, fine grain salt takes up less volume than whole coffee beans.
Choose the right material for your side sealing bag
Most side sealing bags are made from metalized mylar. However, depending on what you are packaging, you can try clear, silver, foil, or kraft materials.
Selecting your side sealing bag features
Will they grab your bag off a peg rack at the local convenience store? If so, you need a hang hole. But don't assume hang holes are only for low priced items. Think about the way candy or nuts are organized near the checkout in your favorite grocery store. They likely use a hang hole as well to make it easy to grab n' go. Hang holes are the hardest working feature on a pouch so even if you expect your pouch to stand up on the shelf think about any possible retailer environments where your pouch May end up hanging.
Our Factory
Shenyang Zhonghe Plastic Packaging Products Co., Ltd., established in 1991 with a registered capital of 20 million yuan, is a professional manufacturer of environmentally friendly plastic packaging products. Over the past 33 years, the company has steadily developed by increasing its capital, equipment, talent, and technology. The factory has expanded in scale, and output has increased year by year. The facility now covers 18,000 square meters and employs over 150 technical and engineering management personnel. It operates 50 professional production lines with complete and advanced equipment, handling the entire production process from design and plate making to film blowing, printing, compounding, bag making, and quality inspection.
Asked Questions
As one of the leading side sealing bag manufacturers and suppliers in China, we warmly welcome you to wholesale side sealing bag for sale here from our factory. All custom made products are with high quality and competitive price.
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