Shrinking machine packaging

Shrinking machine packaging

Shrinking machine in the contraction process, does not affect the quality of the packaging, and can quickly and perfectly shrink, the packaged product can be sealed, moisture-proof, anti-impact, suitable for multi-item tight packaging and pallet packaging.

Shrink machine packaging method 1, open ends

It uses a tubular film or a flat film to wrap the package in a sleeve and then perform heat shrinking operation. After the package is completed, there is a shrinkage opening at both ends of the package.

(1) When a tubular film is used, the opening of the tubular film is first opened, and then the product is pushed into the tubular film by means of a chute, and then the film is cut. As shown in Figure 1. This method is more suitable for wrapping cylindrical objects, such as batteries, paper rolls, bottles and cans. The advantage of packaging with a tubular film is that it reduces the number of 1 to 2 sealing processes and has a beautiful appearance. The disadvantage is that it cannot meet the diversification requirements of products and is only applicable to the mass production of a single product.

(2) Wrap flat products with flat film and double flat film wrapping. The film should be wider than the product. It should be wrapped with two sheets of flat film, that is, wrapped with the upper and the lower two films. At the same time as the previous package completes the seal cutting, the two films are sealed and the product is then machined or manually Push the film upright, place it in place and cut the cutting mechanism. Seal the other side of the product and cut it. After the film wrap product shrinks by heat, the two ends of the package shrink to form an oval opening, using a single flat film. When the flat film is unrolled, the product to be wrapped is fed into the middle of the flat film to form a horseshoe-shaped wrapper, which is then heat sealed and sealed.

Shrinking machine packaging method, four sealed

The product is wrapped around with a flat film or a tubular film with a lap-type seal. For product packaging that requires sealing.

(1) The L-type sealing method can be used for the folded film, and the film is folded on the roll. The film is pulled out to a certain length in a horizontal position. The open end is stretched mechanically or manually, and the product is pushed to the crease.

(2) Pillow bag packaging can be used with a single flat film. This method is to use a single flat film, first sealed longitudinal seam into a tube, push the product into it, and then seal transverse joints cut into a pillow-type package or both sides of the card will be tied into a barrel package.

(3) It is similar to the two-sided open type with double flat film four-side sealed type packaging, and it can be completed only by equip the machine with two side sealing devices.

(4) Wrapping with a tubular film requires sealing and piercing at the same time as cutting the tubular film, followed by thermal shrinkage. The needle is often punctured beside the sealer. When the seal is heat sealed, the puncture needle pierces the bleed hole on the film. After the heat shrink, the hole is often closed by itself.

Shrink machine packaging method 3, one open end

Pallet shrink packaging is a typical example. First, the film is made into a square bottom large bag, and then the large bag is put on top of the stacked product trays, and then heat-shrinks. Place the loaded product tray on the conveyor belt and put on the shrink film bag; send it into the heat shrinkage channel through the conveyor belt, and shrink the package after the heat shrinking channel. Its main feature is that the products can be packed firmly in a certain number of units, not loose during transportation, and can be stacked in the open air.