Bolsas de malezas exóticas Bolsas Mylar impresas personalizadas

A mylar film bag is a commonly used packaging bag with the characteristics of moisture-proof, water-proof, anti-static, wear-resistant, etc. It is widely used in food, cosmetic, medicine, electronics, and other industries.

1. Raw material preparation, polyester film material should meet the relevant standards; at the same time, we also need to prepare printing ink, solvents, and other auxiliary materials.

2、Printing

Gravure Printing: It means that the text and pattern on the original manuscript are made into a printing plate, the surface of the printing plate is coated with ink, and the graphics on the printing plate are transferred to the surface of the material being printed by pressure, to accurately and massively reproduce the printed materials which are the same as those of the original manuscript.

Sub-surface printing and printing.

3, composite

Plastic composite flexible packaging basic principles: each material has different advantages and disadvantages; through the medium (such as glue) will be two or more layers of material are bonded together so that the packaging film and bags achieve better performance of the technology. This technology is called the «composite process» in the production process.

4, aging

The purpose of aging is to accelerate the glue’s curing speed between the materials.

5、Slitting

Printing and composite materials will be cut into the customer’s required specifications.

6、Bag making

Printing, laminating, and slitting the material into the customer’s needs of various types of bags. You can make multiple bag types: center seal bags, side seal bags, stand-up bags, K-shaped bags, R bags, four side seal bags, and zipper bags.

7、Quality Control

(1). Raw material inspection before entering the warehouse

(2). Online inspection of products

Printing inspection – residual solvents, registration, etc.

Composite quality inspection – composite strength, bubbles, wrinkles, etc.

Bag quality inspection – sealing strength, size deviation, etc.

(3). Product quality inspection before shipment

Commonly used printing materials

BOPP

BOPP is a film formed after bi-directional stretching without heat-sealing performance, commonly used as printing materials because of its superior moisture resistance, suitable for moisture-absorbent cookies, cold fruits, puffed food, melon seeds, etc., the surface of the printing material.

KOP

Coated biaxially oriented polypropylene is coated with a layer of polyvinylidene dichloride (PVDC, also known as K-coating) of about 1-2um on the surface of OPP, so KOP has both the performance of OPP and the advantages of PVDC. KOP is commonly used for mooncakes and other food products that require oxygen and water barrier; KOP has a barrier function similar to aluminum thin, but also transparent; you can see the contents of the package.

PCO

Bi-directional heat sealable polypropylene film with the performance of OPP and double-sided heat sealing; is commonly used in the packaging of disks and seaweed.

PL

Bi-directional heat sealable polypropylene pearlescent film is made of polypropylene resin as the primary raw material, adding a certain amount of iridescent powder and produced by bi-directional stretching. It is used for the packaging of cosmetics, soaps, and labels.

PET

Polyester film Like OPP, it is a bi-directional stretch film that is stretched longitudinally and then stretched horizontally, or stretched longitudinally and horizontally simultaneously, and then heat-fixed stretch film. It is commonly used as printing material for machine packaging rolls, high-temperature cooking bags, zipper bags, and other products.

KPET

Chinese name: coated polyester film, is PET surface coated with a layer of about 1-2um polyvinylidene dichloride (PVDC, also called K coating).

Therefore, KPET has both the performance of PET and the advantages of PVDC. It is commonly used for mooncakes and other foods that require oxygen and water barrier. Like KOP, it has a barrier function similar to that of thin aluminum, and it is transparent so that you can see the contents of the package. Its excellent high-temperature resistance makes it more suitable for machine packaging and other pouches that require high-temperature resistance.

NY

Nylon, vacuum packaging, frozen, high-temperature cooking food packaging; commonly used thickness of 15um because it is fragile, so the swing is thunderous; density of 1.15g/cm3.

PVC

Polyvinyl chloride, generally used for bottle labels, single-layer material; printing is completed without composite, need to use PVC glue (alcohol and cyclohexanone 1:1 ratio) bonding; commonly used thickness: 40um.

Mat-opp

Biaxially oriented polypropylene matte film is commonly used in puffed food, moon cakes, tissue paper, and cosmetics packaging.

Commonly used composite materials

CPP

Unstretched polypropylene, which is different from OPP after stretching, CPP is cooled and cured in the original state after the film is formed; CPP is the most commonly used heat sealing material. CPP is the most widely used heat-sealing material. As a printing material, it is often used as the packaging of tissue paper; as a composite material, it is often used as the heat-sealing layer when compounded with other materials.

PET

Unstretched polyethylene, commonly used PE including IPE, CPE, LLDPE, and ordinary PE, is the most widely used heat sealing material as CPP. It is used for packaging milk powder, shampoo, washing powder, and other chemical products. In addition to being commonly used as surface printing materials, it can also be used as a composite material, which has no heat sealing properties, can not be placed in the heat sealing layer, and is generally used as a product in the middle of the composite layer, which can increase the stiffness of the bag and oxygen barrier properties.

VMPET

Aluminized polyester film, i.e., a layer of aluminum foil, is vapor-deposited on the surface of PET, which has both the performance of PET and the performance of aluminum foil.

VMCPP

VMCPP is an aluminized, unextruded polypropylene film with a layer of aluminum foil vapor deposited on the surface of CPP, combining the properties of CPP and AL.

AL

Aluminum foil with excellent insulation and light-blocking properties. The aluminum foil has low strength, no thermal adhesion, and is easy to break at the fold, so it is rarely used alone, generally used for products that are very sensitive to oxygen and water; advanced composite flexible packaging with excellent moisture, oxygen, and ultraviolet performance.

NY

Nylon, in addition to commonly used as a surface layer of printing materials, can also be used as a composite material, which has no heat sealing properties, can not be placed in the heat sealing layer, generally used as a mixed layer in the middle of the product, which can increase the sealing strength of the bag and resistance to pricking; commonly used in the middle of the bag needs to be pressure-resistant and high-temperature sterilization of the pack. For example, jelly bags, laundry detergent bags, chestnut bags, etc. Its oil resistance is suitable for packaging meat and other oily products.