Opp is the abbreviation of bopp, opp bag package is stretchable polypropylene, which belongs to plastic. It is actually a plastic bag, which can be seen everywhere in the market. Most of the transparent packaging bags are made of opp material. Convenient, good performance and versatile.
Read more Opp bag package properties: odorless, odorless, non-toxic, dull appearance, milky white waxy particles, density of about 0.920g / cm3 melting point 130 °C ~ 145 °C. Insoluble in water, slightly soluble in hydrocarbons, toluene, etc. It has low water absorption and can maintain softness and high electrical insulation at low temperatures. The use of anti-fog material greatly reduces the field of view blocking rate, can clearly observe the freshness of fruits and vegetables, and increase the visual beauty to further increase the product sales rate. Food grade materials that can be in direct contact with food; Grade A, good flatness and gloss. The double-sided venting hole design allows the fruits and vegetables to breathe freely, thus prolonging the freshness. We have a professional design team to support your customization and highlight the storefront features. The side seal is designed with a single heat sealing process, and the 5mm self-adhesive is firm and durable. Opp bag package has the characteristics of high transparency and brittleness. The OPP single piece is folded in half and the side is sealed. A self-adhesive seal is adhered to the open tongue. When used, the product is peeled off to protect the skin on the surface of the seal, and the tongue is folded and folded. It can be used conveniently, beautifully and widely used in clothing, food, printing stationery, cosmetics, paper and other industries. Opp bag package of different sizes and different processes can also be customized according to customer needs. Goto Hualei to know more.five advantages:
1. anti-fogging
2. food grade
3. breathable design
4. customizable color logo
5. explosion-proof edge process
Opp bag packing is produced by first making a melt of high molecular weight polypropylene into a sheet or a thick film through a narrow machine head, and then in a dedicated stretching machine at a certain temperature and set speed, simultaneously or in minutes. The film is stretched in two perpendicular directions and subjected to appropriate cooling or heat treatment or processing. The surface energy of the OPP film is relatively low and the adhesion is not strong.
OPP is tasteless, harmless, has high tensile strength, impact strength, good toughness and certain transparency. It can be printed in a color to give a beautiful appearance, so it is often used as a material for composite films.
The OPP film obtained by different processing methods of OPP film has different properties. The opp bag packing produced by the flat film method has a higher tensile ratio than the tubular film method, and the film thickness uniformity is also good. In order to obtain better comprehensive performance, it is usually produced by a multi-layer composite method during use. BOPP can be combined with a variety of different materials to meet specific application needs. For example, BOPP can be combined with LDPE, PE, PT, PO, etc. to obtain high resistance to gas, moisture, transparency, high temperature and low temperature.
Opp bag packing is also widely used, some for cosmetics, mask paper, small jewelry, cards, packaging clothes, shoes and hats or magazines.
Some can even hold food, such as: bread, miscellaneous grains, dried fruit. This bag is non-toxic, tasteless, and is a food-grade bag that can be used with confidence.
If you are looking for more details, kindly visit custom opp bags.