KR20100115471A - Wrap film case - Google Patents

Abstract

PURPOSE: A wrap film case is provided to cut a wrap film without slipping through elastic force. CONSTITUTION: A wrap film case receives a wrap film roll(2) at an acceptance space(3a) of a case body(3) made of synthetic resin, and releases a wrap film(2a) rolled up on a wrap film roller so that the released wrap film passes through first and second support plates via a support guidance plate. An anti-slipping band is installed at each support plate, and a cutting blade(17) of a cover is placed between first and second support plates in order to cut the wrap film.

Description

Wrap film case

The present invention relates to a wrap film case, by adding an elastic pressing plate for pressing and holding the ram film to the case to press the wrap film so that the cutting can be cut and pulled out without the friction means for supporting the wrap film during cutting It relates to a film case.

In general, the wrap film is a stretchy, tacky and transparent film made of synthetic resin as a main raw material. Recently, the wrap film is widely used not only in homes and businesses but also in general industry because it is easy to use for temporary packaging or preservation of food or general cooking. have. In particular, as a synthetic resin film for packaging food or food, not only should it be harmful to the human body, but also the following physical properties generally required as a packaging film are desired.

Mechanical properties such as moderate strength, elongation and shrinkage, barrier properties such as waterproof, moisture proof and airproof, durability of water, acid, oil, heat and cold resistance, hygiene for food and beverage packaging, adhesiveness and cutability to facilitate packaging work , Ease of peeling after packaging is required, and transparency is also required. In addition, when packaging foods containing a large amount of moisture, anti-fogging properties are also required to prevent condensation. The surface of the film is smooth and glossy. It is also not desirable to cause harmful pollutants when incinerated as household waste after use. The present invention relates to a new non-toxic wrap film composition having these various properties, in particular, the cutting property is enhanced to improve the workability in the packaging operation.

Currently commercialized synthetic resin wrap films are made of polyvinyl chloride resin (PVC), polyvinyl chloride resin (PVDC), ethylene-vinylacetate copolymer resin (EVA), low density polyethylene resin (LDPE), and polybutadiene resin as raw materials. Products are being used.

However, plasticizers such as dioctyl phthalate and dioctyl adipate are used for the vinyl chloride resin-based film, and they are extremely harmful to the human body because they flow out of the film at a temperature higher than room temperature. Therefore, it is preferable to use polyolefin resin, such as LDPE, especially as a film which wraps food, beverage, medicine, etc. Vinyl chloride-based resin films such as PVC and PVDC should be used only as industrial films. Especially, films made of vinyl chloride-based resins are fatal weakness that chlorine gas or dioxin, which is a carcinogen, is generated in incineration as waste after use. have.

For this reason, the demand for packaging films made of polyolefin resins such as low density polyethylene (LDPE), ethylene vinyl acetate copolymer (EVA), polypropylene (PP), and linear low density polyethylene (LLDPE) is increasing. Silver is expected to be made of resins such as LDPE and PP that are harmless to humans. Among them, unlike LDPE, LLDPE is a low-density polyethylene resin of a straight chain molecule having almost no long side chain and having a short side chain. Therefore, LLDPE has excellent mechanical strength, low toxicity, and low cost, making it suitable as a material for ultrathin films for food packaging. However, LLDPE film has a higher degree of crystallinity than LDPE, resulting in inferior transparency (haze 3 to 5) and poor surface brightness and smoothness, thereby making it difficult to process a transparent and glossy adhesive packaging film.

In the conventional wrap case 1 using such a wrap, as shown in FIG. 1, a wrap film roll 2 having a wrap film 2a wound around the outer circumferential surface of a hollow shaft member (not shown) in a predetermined number of turns. And a case body 3 having an accommodating space 3a for the wrap film roll and having an upper portion opened therein, and a case cover 4 rotatably provided at the rear edge of the opening 3b of the case body. It consists of a case 5 and the saw blade cutter 6 attached to the front surface of the case main body 3 of this case.

Accordingly, the user opens the case cover 4 of the wrap case 1, and then the free end (or front edge portion) of the wrap film 2a from the wrap film roll 2 in the wrap case 1. And wrap the object to be packaged (not shown), such as a container containing food and the like, by cutting the wrap film 2a using the saw blade cutter 6 of the case body 3. You can do it.

However, since the wrap case 1 according to the prior art is mainly used in the kitchen and the case 5 of the wrap case is made of cardboard, the case 5 of the wrap case 1 is repeatedly bited or In addition to exposure to moisture and the like, the use time is long, there is a problem that the outer surface of the case 5 is discolored or its shape is deformed.

In addition, since the case 5 of the wrap case 1 according to the prior art has a single size structure that can accommodate only a specific wrap film roll 2, various kinds of widths of the wrap film 2a are different. It was not possible to freely and selectively apply the wrap film roll 2 of to a single wrap case 1.

Furthermore, since the saw blade cutter 6 is exposed outside the case 5, the wrap case 1 according to the related art saws the saw blade cutter 6 when the user carelessly or makes a mistake during the cutting operation of the wrap film 2a. ), There is a high risk of injury to hands or fingers.

In addition, the wrap case 1 according to the prior art wraps the free film of the wrap film 2a from the wrap film roll 2 in the case 5 by a predetermined length to make the wrap film in contact with the saw blade cutter 6. The cutting of the wrap film was not neat because it was a method of cutting while pulling (2a).

In addition, the wrap case known as Korean Patent Registration No. 10-0724603 has a convenience in use to cut the wrap while moving the cutting blade horizontally in the case, but there is a problem that the structure is complicated and the manufacturing cost increases.

In another method, as shown in FIG. 2, the wrap film roll 2 wound around the housing space 3a of the case body 3 of the synthetic resin is received, and the wrap film roll 2a is unwound from the wrap film roll 2 Pass the first and second support plates (11, 12) via the support guide plate (13) supported by the hinge (14), and close the cover (10) when the desired draw length is reached.

In this case, the upper ends of the first and second support plates 11 and 12 are integrally molded with non-slip bands 11a and 12a made of silicone or rubber having elastic force to prevent slipping, and as shown in FIG. The cutting knife 17 between each of the pressing plates 15 and 16 is pulled by the first and second pressing plates 15 and 16 formed on one end inner surface of the one end side, and the lid (around the hinge 10a). It rotates further with 10) and cuts the ram film 2a. 14 is a hinge connecting the support guide plate 13 to be hinged, and the support guide plate 13 functions to guide the wrap film 2a to be separated from the wrap film roll 2.

However, such a structure is necessary to form the non-slip bands 11a and 12a of different materials in order to prevent slippage of the wrap film 2a, so that the injection is cumbersome and the manufacturing cost increases.

The present invention is to solve this, an object of the present invention is to guide the wrap film to the cut portion to the synthetic resin case body for drawing out the wrap film from the wrap film roll and integrally add the elastic pressing plate that acts to press the cover when cutting In order to provide a wrap film case that can be molded with the same material by eliminating the need for a separate frictional force generating means.

Another object of the present invention is to release the wrap film to facilitate the withdrawal of the wrap film because the elastic force is released when the cover is opened for the withdrawal of the wrap film to restore the elastic pressing plate to rise up and the space is separated from the second support plate by pulling the wrap film To provide a lap film case.

Another object of the present invention is to provide a wrap film case that can be easily pulled out by forming a draw hole through which a finger enters so that the end of the wrap film can be easily grasped by hand at the center portion of the elastic pressing plate in the longitudinal direction after cutting.

To this end, the present invention accommodates the wrap film roll in the housing space of the case body of the synthetic resin, and unwinds the wrap film wound on the wrap film roll to pass the first and second support plate through the support guide plate supported on the support plate support, An anti-slip band is installed at the top of the support plate, and when the desired draw length is reached, the wrap film case cuts the wrap film so that the cutting knife of the cover is between the first and second support plates.

Remove the anti-skid straps and support plates;

Provides a wrap film case with an elastic pressing plate extending from the base plate support, the end of which is bent upward, and the unwrapped wrap film is elastically in contact with the inner surface of the cover and is pressed down to prevent slippage. do.

The present invention is pulled out through the elastic pressing plate having a pressing function so as to enable the pressing and cutting after pressing out the wrap film to be cut in the pressing state when pressing the cover to prevent the slip of elasticity for pressing separately No band is needed, and it is pressed to enable a certain elasticity so that it can be cut without slipping.

The present invention has a drawing hole to guide the drawer to the end of the elastic pressing plate to shorten the time when the new drawing after cutting to enable the hygienic withdrawal of the inner surface of the wrap.

The present invention does not add a separate elastic means in order to give the elastic force, the curved plate of the elastic pressing plate is configured to be inclined so that the height difference with the pressing plate support toward the end so that the pressing force with the cover acts as a surface contact rather than point contact Function to make the pressing force constant so that the cross section of the cutting wrap film is uniform.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

3 is a cross-sectional perspective view showing a structure of the present invention, Figure 4 is a cross-sectional perspective view showing a cutting state of Figure 3, Figure 5 is an enlarged view of the main part of the present invention,

The wrap film roll 2 is accommodated in the accommodating space 3a of the case body 3 of the synthetic resin, and the wrap film 2a wound on the wrap film roll 2 is unwound and hinged to the support plate support 13-1. Pass the first and second support plates (11, 12) through the support guide plate 13 supported by the), and the non-slip bands (11a, 12a) are installed on the upper end of each support plate (11, 12), the desired pull out In the wrap film case to cut the wrap film so that the cutting knife 17 of the cover 10 is between the first and second supporting plates (11, 12) when the length is reached,

Removing the anti-skid straps 11a and 12a and the support guide plate 13;

An elastic press plate which extends from the support plate support 13-1 and whose end is bent upwards and the wrap film 2a released when the cover is pressed in contact with the inner surface of the cover is elastic and pressed down to prevent slippage. (20) is added.

The elastic pressing plate 20 extends so as to contact the inner surface of the pressing plate support 21 extending from the supporting plate support 13-1 and the cover 10 in a state before the pressing and bending of the pressing plate support upward. It comprises the curved board 22 which becomes.

In the center of the end of the curved plate 22, it is preferable to add a drawing hole 25 to pull the end of the cut film (2a) to the outside to facilitate the new drawing.

The height of the pressing plate support 21 and the curved plate 22 is configured to increase toward the end of the curved plate 22 so that the curved plate 22 and the cover 10 can be in surface contact.

The height of the pressing plate support 21 at the end of the curved plate 22 is the height h1 of the first pressing hole 15 in a state in which the lid 10 is covered without pressing the height h1 of the first supporting plate 11. It can be illustrated that the configuration of h2-h3) to be higher than the added value.

In the present invention configured as described above, the height from the upper surface of the pressing plate support 21 to the end of the curved plate 22 may be larger than the height h1 of the first supporting plate 11, and more preferably, the first supporting plate. The height h1 of 11 may be higher than the height of the first pusher 15 (height h2-h3 based on FIG. 5).

This is in the state where the cover 10 is in contact with the initial curved plate 22 (of course, the lap film 2a passes on the curved plate 22) (one dot chain of the curved plate 22 of FIG. 5). The cover 10 is lowered by the height (h3) to contact the line position)) When the cover 10 is pressed further, the cover 10 is pressed more naturally and the inner surface of the cover 10 and the curved plate 22 are in close contact with each other. The surface contact state and the lap film (2a) between them is pressed to achieve the surface contact state at the same time, from then on, the first pressing hole 15 is in close contact with the second support plate 110, and then secondly, and then FIG. As the cover 10 is covered, the wrap film 2a is stably cut, and the remaining wrap forms a state where the end is placed on the curved plate 22.

After the cutting is completed, the cover 10 is opened and the finger is inserted through the drawing hole 25 exposed to the curved plate 22 and the wrap film 2a is pulled out to reach the desired length. By simply pressing the cover 10 naturally, the curved plate 22 is gradually pressed while being in surface contact in a state in which the curved plate 22 is subjected to a repulsive force in the solid state and the dotted line state due to the strong pressing action by the surface contact of the curved plate 22. The lowering allows cutting by the cutting knife 17 without moving the wrap film 2a.

1 is a perspective view of a typical wrap film case,

Figure 2 is a side cross-sectional view of a wrap film case of another general structure,

3 is a cross-sectional perspective view showing the structure of the present invention;

4 is a cross-sectional perspective view showing a cutting state of FIG.

5 is an enlarged view illustrating main parts of the present invention.

Explanation of symbols for the main parts of the drawings

2; wrap film roll 2a; wrap film 3; case body 3a; receiving space 10; cover 11; first support plate 12; second support plate 13-1; support plate support 15; first presser 16; second presser 17 ; Cutting knife 20; Elastic presser plate 21; Presser plate support 20; Elastic presser plate 21; Presser plate support 22; Curved plate 25; Drawer hole

Claims (5)

Receiving the wrap film roll (2) in the housing space (3a) of the case body (3) of the synthetic resin, release the wrap film (2a) wound on the wrap film roll (2) a support supported on the backing plate support 13-1 Pass the first and second support plates (11, 12) through the guide plate (13), and non-slip bands (11a, 12a) are installed on the upper ends of each support plate (11, 12), and the cover ( In the wrap film case for cutting the wrap film so that the cutting knife 17 of 10) is between the first and second supporting plates (11, 12), Removing the anti-skid straps 11a and 12a and the support guide plate 13; An elastic press plate which extends from the support plate support 13-1 and whose end is bent upwards and the wrap film 2a released when the cover is pressed in contact with the inner surface of the cover is elastic and pressed down to prevent slippage. Lap film case, characterized in that the addition (20). The pressure plate (20) according to claim 1, wherein the elastic pressure plate (20) is pressed against the pressure plate support (21) extending from the base plate support (13-1) and the inner surface of the cover in a state before the pressing and bending of the pressure plate support. Wrap film case comprising a curved plate 22 extending. 3. The wrap film case according to claim 2, wherein a drawing hole (25) is added to the center of the end portion of the curved plate (22) to pull out the cut end portion of the wrap film (2a) so as to facilitate new drawing out. The height of the pressing plate support 21 at the end of the curved plate 22 is the first pressing hole 15 in a state in which the lid 10 is covered without pressing the height h1 of the first supporting plate 11. Lap film case, characterized in that configured to be higher than the height (h2-h3) of the added value. The height of the pressing plate support 21 and the curved plate 22 is configured to increase toward the end of the curved plate 22, so that the curved plate 22 and the lid 10 are in surface contact. Lap film case, characterized in that.

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