CN218949600U - Buffer foam and packaging device - Google Patents

Abstract

The utility model provides a buffer foam and a packaging device. The buffer foam comprises: a pearl cotton having a mounting portion and a protruding portion protruding from one side of the mounting portion; and a protective film fixed to the mounting portion of the pearl wool and not covering the protruding portion of the pearl wool.

Description

Buffer foam and packaging device

Technical Field

The present utility model relates to the field of packaging, and more particularly to a cushioning spacer member between stacked flat glass sheets.

Background

When the prior plate glass is stacked in the loading box body, in order to prevent the plate glass from being damaged, a buffer package material is placed between the stacked plate glass, the buffer package material is generally EPE polyethylene pearl cotton, and the strength and the stiffness of the EPE polyethylene pearl cotton can be improved while the buffer performance is ensured by increasing the thickness of the pearl cotton or covering polyolefin PO films on two sides of the pearl cotton.

However, as described above, in order to reliably protect glass, the conventional cushioning packaging material increases the thickness of pearl wool or covers PO films on the entire upper and lower surfaces thereof, which results in a significant increase in cost, and the surface coating film causes abnormal scratch of the polarizing plate protective film of the plate glass after transportation. On the other hand, the PO film is coated on one whole surface of the upper surface and the lower surface under the condition of not increasing the thickness of the pearl cotton, so that the material cost can be greatly reduced and the strength can be improved. However, in the case of this single-sided film, there is a phenomenon that warpage is excessively large in the film-coated surface direction due to the influence of the environment, and a position warpage phenomenon of a notched structure is remarkable. Fig. 3 and 4 are schematic views showing the structure and use process of the conventional cushion foam, respectively. According to the existing buffer foam structure, the defects of positioning, placement deviation and the like caused by overlarge warping exist, specifically, the warping position is greatly influenced by airflow and cannot fall to the original position; so that the positioning deviation is excessive when the machine adsorbs foam, and the foam cannot be placed in the middle or even outside the box due to the deviation of air flow when the foam is placed in the loading box; when the machine is used for placing glass on the component, foam is extruded, and when the equipment sucks the glass from the loading box, the inner wall of the box or the foam and other anomalies can be scraped and rubbed.

Disclosure of Invention

The present utility model has been made in view of the above-described problems, and an object thereof is to provide a cushion foam having a partial film coating structure capable of improving a warp phenomenon.

The cushioning material according to the first aspect of the present utility model includes: a pearl cotton having a mounting portion and a protruding portion protruding from one side of the mounting portion; and a protective film fixed to the mounting portion of the pearl wool and not covering the protruding portion of the pearl wool.

Preferably, in the first aspect, the protruding portion includes a connecting portion provided in connection with one side of the mounting portion, and an extending portion protruding on one side of the connecting portion away from the mounting portion.

Preferably, in the first aspect, the connecting portion and the extending portion are formed with a stepped structure.

Preferably, in the first aspect, the extending portion of the protruding portion is recessed with a notch on a side away from the protective film.

Preferably, in the first aspect, the protective film is a PO film.

Preferably, in the first aspect, the protective film is fixedly coated on the pearl wool by high-temperature coating.

Preferably, the cushioning member according to the second aspect of the present utility model includes: the buffer foam in the first aspect, and the loading box, the upper surface of which is open, so as to form a containing space for containing the flat glass, and the buffer foam is arranged between two adjacent flat glass.

Preferably, in the above second aspect, the loading box further includes a body portion and a stopper portion installed in the body portion for restricting movement of the sheet glass.

Preferably, in the second aspect, the body portion has a box structure with an open upper surface, and the body portion and the inner peripheral wall of the limiting portion form the accommodating space.

Preferably, in the second aspect, a groove for restricting movement of the sheet glass is formed on an inner peripheral wall of the restricting portion.

According to the utility model, the buffer foam with the local film coating structure for improving the warping phenomenon can be provided.

Drawings

Fig. 1 is a schematic view showing a packaging device of the present utility model.

Fig. 2 is a schematic structural view of the cushion foam of the present utility model.

Fig. 3 is a schematic structural view of a conventional cushion foam.

Fig. 4 is a schematic view of a conventional process of using a cushion foam.

Detailed Description

The main body of the buffering foam is pearl cotton, which is also called foam polyethylene film, is a novel environment-friendly packaging material and is composed of countless independent bubbles generated by physical foaming of low-density polyethylene. The waterproof and moistureproof waterproof and shockproof sound-insulating and heat-insulating plastic composite material has the advantages of water insulation, moistureproof performance, shock resistance, sound insulation, heat preservation, good plasticity, strong toughness, cyclic reconstruction, environmental protection, strong collision resistance and the like, and has good chemical resistance. The pearl cotton has recoverability and wide application, but the traditional thin pearl cotton has poor antistatic ability, tensile property and tear resistance, is easy to break and can not play a good role in protecting packaged and buffered articles. Thus, in the conventional cushion foam, a reinforcing protective layer having antistatic and tear-resistant properties, such as a PO film, is generally coated on the pearl foam body.

As shown in fig. 1, the packaging device 100 according to the present utility model is used for packaging stacked sheet glass 200. The packing apparatus 100 includes the loading box 10 and the buffer foam 30, a plurality of sheet glasses 200 are accommodated in the loading box 10, and the buffer foam 30 is provided between each adjacent two of the sheet glasses 200, thereby effectively preventing the problem of damage due to direct contact friction or collision of the adjacent two of the sheet glasses 200.

Further, as shown in fig. 1, the loading box 10 has a box shape with an open upper surface, and a flat glass 200 having a rectangular planar shape and the buffer foam 30 are accommodated in the accommodation space 101 of the loading box 10 in a size-matched manner. It is to be understood that the shapes of the loading box 10, the flat glass 200, and the cushion foam 30 are not limited thereto, and may be changed as appropriate according to actual circumstances. The loading box 10 includes a main body 103, a stopper 105 provided in the main body 103, and a stopper member V disposed on the stopper 105. The body 103 has a box shape with an open upper surface, and accommodates a plurality of sheet glasses 200. The limiting part 105 is installed inside the body 103 and fixedly connected with the inner wall of the body 103. The bottom surface of the body 103 and the peripheral wall of the stopper 105 form the accommodation space 101. The limiting member V is disposed on at least one corner of the limiting portion 105 to perform the functions of limiting, buffering and protecting. The peripheral wall of the stopper 105 and the stopper member V are matched with the plurality of sheet glasses 200, so that the sheet glasses 200 can be fixed in the housing space 101 and the movement of the sheet glasses 200 can be restricted, so that the plurality of sheet glasses 20 can be prevented from being damaged by shaking in the loading box 10 during the transportation, and the plurality of sheet glasses 200 can be positioned in the loading box 10 effectively and stably. In the present embodiment, the limiting members V are detachably received in the corners of both ends of the limiting portion 105 in the longitudinal direction, respectively, and each of the limiting members V contacts the plurality of sheet glasses 200, thereby performing the functions of limiting, buffering, and protecting the plurality of sheet glasses 200.

The structure of the cushion foam 30 of the present utility model will be described in detail with reference to fig. 2. As shown in fig. 2, the cushion foam 30 includes pearl cotton 31 and PO film 33 (protective film). In the present embodiment, the pearl wool 31 has a substantially rectangular shape in a plan view, and specifically, the pearl wool 31 includes a rectangular mounting portion 301 and a protruding portion 303 protruding from one side of the mounting portion 301. The mounting portion 301 is surrounded by a first side 311, a second side 313, and a third side (not shown). Wherein the first side 311 and the third side are disposed opposite and parallel to each other, and both ends of the second side 313 are connected to the first side 311 and the third side, respectively. The protruding portion 303 is formed protruding from a side of the mounting portion 301 remote from the second edge 313. In the present embodiment, the protruding portion 303 includes a connection portion 3031 and an extension portion 3033, the connection portion 3031 is provided to be connected to one side of the mounting portion 301, and the extension portion 3033 protrudes and extends on one side of the connection portion 3031 away from the mounting portion 301. The connection portion 3031 and the extension portion 3033 are formed with a stepped structure 3035. The length of the connection portion 3031 is greater than the length of the extension portion 3033 due to the stepped structure 3035. The step structure 3035 is L-shaped. It is understood that the shape of the step structure 3035 is not limited to an L-shape, and may be designed according to actual requirements.

More specifically, a side surface of the connection portion 3031 of the protrusion 303 is aligned with the first edge 311, and a side surface of the extension portion 3033 is not aligned with the first edge 311; the other side surface of the connection portion 3031 of the protrusion 303 is aligned with the third side, and one side surface of the extension portion 3033 is not aligned with the third side, so that the length of the connection portion 3031 is the same as the distance between the first side 311 and the third side, and the length of the extension portion 3033 is smaller than the distance between the first side 311 and the third side, i.e., smaller than the length of the second side 313. In addition, the extension 3033 of the protrusion 303 is concavely formed with a notch 3037 at a side remote from the second edge 313. In the present embodiment, the number of notches 3037 is 3, and the number is an inverted triangle. However, the above is merely an example, and the notch 3037 may have other shapes, and the number thereof is not limited to 3.

Further, a PO film 33 is fixed to the mounting portion 301 by high-temperature lamination over the pearl wool 31. The PO film 33 has a rectangular shape, and covers the mounting portion 301 of the pearl wool 31 without covering the protruding portion 303, so that the protruding portion 303 leaks out of the PO film 33. Specifically, in a top view, the first edge 331 and the third edge (not shown) of the PO film 33 are aligned and overlapped with the first edge 311 and the third edge 311 of the pearl wool 31, respectively, and the second edge 313 of the pearl wool 31 is aligned and overlapped with the second edge 333 of the PO film 33. The fourth side 337 of the PO film 33 is located on the boundary line of the mounting portion 301 and the protruding portion 303 (more specifically, the connection portion 3031) of the pearl wool 31. The PO film 33 covers only the mounting portion 301 and does not cover the protruding portion 303, and thus the PO film 33 does not cover the plurality of notches 3037.

In addition, the area of the buffer foam 30 is slightly larger than that of the flat glass 200 in order to protect it more reliably. In addition, when loading glass, the buffer foam 30 is first laid on the bottom surface of the loading box 10, then one sheet of glass 200 is placed, then the buffer foam 30 is placed on the sheet of glass 200, and then the next sheet of glass 200 is placed on the buffer foam 30, whereby the above steps are repeated to perform the overlapping placement of the plurality of sheets of glass 200.

Referring to fig. 3 and 4, in the prior art, both the pearl wool 31 and the PO film 33 are subjected to surface tension, but are affected by the environment, the surface tension of the PO film 33 and the pearl wool 31 is inconsistent, specifically, the tension of the PO film 33 is larger, the stress at the notch position is obvious, so that the foam coated on one side is warped towards the coated surface, which is opposite to the placement direction of the machine, and thus, the position deviation is caused by the influence of air flow. By adopting the cushion foam 30 of the present utility model, the coating film (PO film 33) is eliminated on the notch side (protruding portion), so that the stress on both sides of the notch side is balanced, and the phenomenon of warping to one side can be improved.

Further, it was found from experiments using the above-described buffer foam having a partial film coating structure that the notch side was free from warpage toward the film coating surface after the buffer foam was left for one week at normal temperature. Therefore, the coating is canceled on one side (the protruding part) with the notch, namely, the local composite structure that the pearl cotton is coated with the PO film is adopted on the notch side only, and the part outside the notch side is coated with the pearl cotton, so that the whole strength of the foam can be improved on the premise of not increasing the thickness of the foam, and the warping and a series of abnormal phenomena caused by single-sided coating can be solved.

All aspects of the embodiments disclosed herein are exemplary and not to be construed in a limiting sense. Therefore, the technical scope of the present utility model is not to be interpreted by the above embodiments only, but is to be defined based on the description of the claims. Further, all changes which come within the meaning and range of equivalency of the claims are to be embraced therein.

Claims (10)

1. A cushioning foam, comprising:

a pearl cotton having a mounting portion and a protruding portion protruding from one side of the mounting portion; and

a protective film which is fixed to the mounting portion of the pearl wool and does not cover the protruding portion of the pearl wool.

2. The buffered foam of claim 1, wherein the foam,

the protruding portion includes a connecting portion and an extending portion,

the connecting part is connected with one side of the mounting part, and the extending part protrudes and extends at one side of the connecting part far away from the mounting part.

3. The buffered foam as defined in claim 2, wherein,

the connecting part and the extending part are formed with a step structure.

4. The buffered foam as defined in claim 2, wherein,

the extending part of the protruding part is concavely provided with a notch at one side far away from the protective film.

5. The buffered foam of claim 1, wherein the foam,

the protective film is a PO film.

6. The buffered foam of claim 1, wherein the foam,

the protective film is fixedly covered on the pearl cotton in a high-temperature covering mode.

7. A packaging device, comprising:

the buffered foam of any of claims 1 to 6, and

a loading box with an upper surface opened to form an accommodating space for accommodating the plate glass,

the buffer foam is arranged between two adjacent sheet glass.

8. The packaging device of claim 7, wherein the first and second containers are disposed in a common plane,

the loading box further comprises a body part and a limiting part which is arranged in the body part and used for limiting the movement of the plate glass.

9. The packaging device of claim 8, wherein the first and second containers are disposed in a common plane,

the body part is of a box body structure with an open upper surface, and the body part and the inner peripheral wall of the limiting part form the accommodating space.

10. The packaging device of claim 8, wherein the first and second containers are disposed in a common plane,

and a groove for limiting the movement of the plate glass is formed on the inner peripheral wall of the limiting part.

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