JPH0542975A - Expandable corner pad - Google Patents

Abstract

PURPOSE:To facilitate storage, transportation and disposal of a corner pad by forming the corner pad into a L-shape by only one operation of supplying a gas from a gas cock to keep an article away from the wall of a container or package. CONSTITUTION:A joint is formed between two bag sheets 1 by attaching together their edges with a peripheral edge seal 5 and a part of the peripheral edges is left unsealed with the seal ends 8 and 9 formed. The bag sheets 1 are fusibly attached at predetermined places to divide the gas chamber into a plurality of sections, form divided seals 4 to adjust the height of a pad upon expansion and provide bending seals 3 at predetermined places. Such sheets are then folded along A-A line to stack the resulting four sheets and the parts of the sheets parallel to the peripheral edge seal 5 of the bottom side are sealed together starting at the seal ends 8 and 9. To use this corner pad, a bag 20 is inflated with the gas supplied from a gas cock 12 to form the corner pad bent at 90 deg. in the positions of bending seals 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic suspension method for separating an article from a container or a package wall.

[0002]

2. Description of the Related Art Styrofoam or wood. Cardboard chunks are used.

[0003]

Styrofoam has been ranked as the rightmost wing of the industrial waste treatment difficulty, which has been a problem in recent years, and wood. Corrugated cardboard blocks and the like have a large cost burden. Focusing on these points, the present invention provides a packaging material which can be easily replaced with styrene and is inexpensive.

[0004]

A bag body made of a flexible plastic film is filled with gas to serve as a cushioning material and a suspension material.

[0005]

When a gas is injected from the stopper into the bag body having a partition seal and the expansion height is appropriately limited, the joint seal 10 bends at the position of the bent portion seal 3 to complete an L-shaped corner pad.

[0006]

EXAMPLES Referring to FIG. 1, the bag sheet 1.
2 are joined by a peripheral seal 5 except a part of the peripheral edge, and a peripheral seal end 8.9 is formed. Reference numeral 4 is a partition seal for adjusting the height at the time of expansion by dividing the gas chamber into a plurality of parts. The bent portion seal 3 will be described later, but the expanded bag body does not bend the bent portion seal 3. It is formed a little wider so that it can be easily bent when it is bent at 90 °, and it also serves as a compartment. A gas stopper 12 is provided at one location of the bag body 20.
Is provided. Although the structure and form of the gas stopper 12 are not particularly limited, the inventor adopted a check valve made of a flexible plastic film in the present embodiment. When gas is injected from the gas plug 12, the chambers partitioned by the partition seal 4 and the bent seal 3 are connected by the gas passage 13, so that all the chambers can be filled. 2 shows a state in which four sheets are folded in half along the line AA shown in FIG. 1 and connected to the overlapping peripheral edge seal ends 8 and 9, and the bottom edge peripheral seal 5 shown in FIG.
A coupling seal 10 is formed which is parallel to the. After the coupling seal 10 is formed, the remaining triangular cutout 11 is cut off. When using this, when gas is injected from the gas plug 12, the gas begins to fill the inside of the bag body 20 and at the same time bends with the bending portion seal 3 as a fulcrum due to the resistance of the coupling seal 10, and when the filling is completed, the bending portion respectively The corner pad is completed by bending at 90 ° at the position of the seal 3.

[0007]

EFFECTS OF THE INVENTION Styrofoam is expensive because the cost of the molding die costs, and the cost of the warehouse before use is high. There are many burdens such as transportation costs, and above all, there is a big problem in disposal. For this reason, cardboard blocks, wood, etc. have been tried, but there is another problem in terms of price. Since the corner pad according to the present invention is simply a film before use, it is more expensive than the above. It is worth noting that there is no transportation cost, and disposal is not a problem. What is remarkable is that the L-shape is completed by a single operation of injecting gas from the stopper. In particular, in the industry that requires packaging, there is also governmental guidance, and there is an urgent need to find materials that can replace styrofoam, and the present invention can make a significant contribution to industries that require packaging.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention,

FIG. 2 is a plan view showing a state of being half-folded along the line AA in FIG.

FIG. 3 is a perspective view showing a state in which the gas is filled in FIG. 2 and the gas is expanded.

[Explanation of symbols]

 1.2 ... Bag sheet 3 ... Bent seal 4 ... Partition seal 5 ... Perimeter seal 6.7 ... Valve body sheet 8.9 ... ... Bag body

Claims (1)

[Claims] 1. A flexible two-layered plastic film is joined by heat sealing except for a part of a peripheral edge thereof to form a gas chamber partitioned by a plurality of partition seals and bent portion seals, and each gas chamber is a gas. A gas stopper for inflating and contracting the bag is provided at one location of the bag connected through the passage, and is folded in half along the line AA shown in FIG.
An inflatable corner pad characterized in that a joint seal that connects to the overlapping peripheral seal ends is formed parallel to the peripheral seal, and the remaining triangular portion is cut off.