CN209921995U - Biaxially oriented pearl wool and die cutting die for preparing same - Google Patents

Abstract

The application belongs to the field of packaging materials, and relates to bi-directional stretchable pearl wool and a die cutting die for preparing the pearl wool. The bi-directionally stretchable pearl wool body comprises: a plurality of first micro flex lines, second micro flex lines, and holes, wherein each of said first micro flex lines are parallel to each other and each of said second micro flex lines are parallel to each other; each first micro-pull wire and each second micro-pull wire intersect in the area where the hole is located. The die cutting die is a die cutting die with a corresponding structure of the pearl wool, and the pearl wool can be prepared only through one-time die cutting forming. Through in this application the technical scheme of cross cutting mould can process out a but biaxial stretching's pearl cotton material more fast, and this pearl cotton tensile properties is excellent, has broken through the limitation that pearl cotton can only the unidirectional stretching in the current packing field, obtains a but biaxial stretching's pearl cotton.

Description

Biaxially oriented pearl wool and die cutting die for preparing same

Technical Field

The application belongs to the field of packaging materials, and relates to bi-directional stretchable pearl wool and a die cutting die for preparing the pearl wool.

Background

In the field of packaging materials, pearl wool is an existing advanced protective inner packaging material, has high elasticity and white appearance, is light, flexible and easy to bend, has excellent performances in the aspects of shock resistance, heat preservation, water and moisture resistance, heat insulation, sound insulation, friction resistance, ageing resistance, corrosion resistance and the like, is an ideal substitute of a traditional packaging material, and is widely used for packaging various products.

However, although the existing pearl cotton materials are various in types and still have defects, most of the pearl cotton materials are made of sheets and pads adhered by the sheets, and usually have the stretching performance in one direction, obviously, the pearl cotton materials have the defect that the length in one direction is required to be relatively constant, so that the pearl cotton materials cannot be suitable for the situation that the transverse direction or the longitudinal direction needs to be changed.

In view of the above defects or shortcomings in the prior art, the inventors of the present application expect to provide a biaxially oriented pearl cotton with excellent performance and a die-cutting mold for preparing the pearl cotton, which not only overcomes the above shortcomings in the prior art, but also significantly improves the cushioning property of the pearl cotton packaging material, thereby further widening the application field of the pearl cotton.

SUMMERY OF THE UTILITY MODEL

With the above objects in view, in one aspect, the present application innovatively provides a bi-directionally stretchable pearl wool, the pearl wool main body including: a plurality of first micro flex lines, a second micro flex line, and a plurality of apertures, wherein:

each of the first micro-flex wires is parallel to each other;

each of the second micro-flex wires is parallel to each other;

each first micro-pull wire is intersected with all the second micro-pull wires and is intersected in the area where the hole is located; each second micro-pull wire is intersected with all the first micro-pull wires and is intersected in the area where the hole is located;

wherein: the first micro-pull wire is arranged along a first direction, the second micro-pull wire is arranged along a second direction, and the first direction is different from the second direction;

the first micro-drawing line and the second micro-drawing line are both provided with a plurality of stretching units.

Further, the stretching unit includes a first side, a second side, and a third side, all of which are fold line sides having an obtuse angle; two ends of the third edge are respectively connected with one end of the first edge and one end of the second edge, and the other end of the first edge is an open end; the other end of the second side is also an open end; and the two adjacent stretching units are connected through the first edge of one stretching unit and the second edge of the other stretching unit and are connected to the area where the hole is located.

Further, the third side includes three obtuse angles thereon.

Further, when the pearl wool body is stretched in a first direction, the first and second sides of the stretching unit on the first micro stay are stretched and rotated about one end thereof based on a force applied by the stretching; and when the pearl wool body is stretched in a second direction, the first side and the second side of the stretching unit on the second micro-pull thread are stretched and rotate around one end thereof based on the force applied by the stretching.

Furthermore, the stretching units of different first micro-stretching wires are symmetrically arranged or arranged in the same way; the stretching units on different second micro-stretching wires are symmetrically arranged or arranged in the same way.

Further, the number of the first micro flex lines is different from the number of the second micro flex lines. Optionally, the number of the first micro flex lines is the same as the number of the second micro flex lines.

Further, the hole is arranged in the central area of the intersection point of the first micro-flex wire and the second micro-flex wire, and can be circular, square, rectangular, diamond-shaped or oval.

Further, the area of the horizontal cross-section of the hole is smaller than the area of the horizontal cross-section of the intersection point.

Further, the first micro flex wire and the second micro flex wire intersect at an angle α, and 0< α <180 degrees. Preferably, 45< α <145 degrees.

Further, the size of the stretching unit on each of the first micro flex wire and the second micro flex wire before being stretched is smaller than the hole.

Further, the first micro flex wire and the second micro flex wire may each independently have unequal widths.

Further, the first micro-flex lines and the second micro-flex lines may be each independently equal in width.

Further, the hole may be a hole having a diameter of several millimeters to several tens of centimeters. Preferably, the pores are millimeter-sized pores having a pore diameter or side length of 5mm to 15 mm.

In another aspect, the present application provides a die-cutting die for preparing the biaxially stretchable pearl wool, the die-cutting die comprising: the mould main part with set up and be provided with a plurality of first group's cutters, second group's cutter and a plurality of third group's cutter in the mould main part, wherein: each of the first set of cutters is parallel to each other; each of said second set of cutters being parallel to each other; each first group of cutters intersects with all the second group of cutters and intersects with the region where the third group of cutters is located.

Further, each group of cutter lines comprises a first blade, a second blade and a third blade which cut the stretching unit, and the three blades are broken line blades with obtuse angles; two ends of the third blade are respectively connected with one end of the first blade and one end of the second blade, and the other end of the first blade is an open end; the other end of the second blade is also an open end; and the cutting of two adjacent stretching units is realized by connecting the first blade with the second blade of the other stretching unit and connecting the first blade with the second blade in the area where the third group of cutters is located.

Further, on the third blade is a fold line containing three obtuse angles.

Furthermore, each first group of cutters comprises two cutter lines which are arranged in parallel and have a first distance, and a third distance exists between any two adjacent first groups of cutters; preferably, the first pitch is smaller than the third pitch.

Each second group of cutters comprises two cutter lines which are arranged in parallel and have a second distance, and a fourth distance exists between any two adjacent second groups of cutters; preferably, the second pitch is smaller than the fourth pitch.

Furthermore, each cutter line in the first group of cutters and the second group of cutters is formed by a plurality of blades which are upward in cutting edge and are intersected and connected with the front end and the rear end, wherein the angle of the intersection of the front blade and the rear blade is an obtuse angle.

Each third group of cutters is provided with one or more blades with upward cutting edges and is in a closed hole shape as a whole.

In a die-cutting die, the number of the first group of cutters is different from that of the second group of cutters. Optionally, the number of tools of the first set is the same as the number of tools of the second set.

Further, the third group of cutters is arranged in the central area of the intersection point of the first group of cutters and the second group of cutters, and the cross section of the hole presented by the third group of cutters can be circular, square, rectangular, rhombic, oval or other shapes.

Further, a horizontal cross-sectional area of each of the third set of cutters is less than a horizontal cross-sectional area of the intersection point.

Further, the first set of cutters intersects the second set of cutters at an angle α, and 0< α <180 degrees. Preferably, α is an obtuse angle.

Further, the first pitch of any one of the first set of tools and the second pitch of the second set of tools may be equal or different.

Further, the third pitch of two adjacent first set of tools and the fourth pitch of two adjacent second set of tools may be equal or different.

Further, the horizontal cross-section of each of the third set of cutters is independently cylindrical or spherical. The holes may be holes having a diameter of several millimeters to several tens of centimeters. Preferably, each of the third group of cutters defines a hole of millimeter scale, and the diameter or side length of the cross section of the hole is 5mm-15 mm.

Advantageous effects

Compared with the prior art, based on the pearl sponge that can biaxial stretching that above-mentioned this application provided, this pearl cotton tensile properties is more excellent, has broken through the limitation that pearl cotton can only the unidirectional stretching in the current packing field, obtains a pearl cotton that can biaxial stretching. In addition, depending on the size of the hole, the stretched hole may be used as a hole site for accommodating articles of the same or different sizes.

Based on the die cutting die provided by the application, the die cutting die has a corresponding structure for realizing the biaxial tension of the pearl cotton, is simple in structure and easy to operate, can be formed under the conventional die cutting condition for one time, and can be used for preparing the biaxial tension pearl cotton without the need of secondary processing for realizing the biaxial tension in the prior art; meanwhile, the pearl cotton particles or blocks produced after die cutting can also be used as a buffer material for the anti-collision packing filler of the articles.

Drawings

For a more clear understanding of the present application, reference is now made to the following non-limiting exemplary descriptions taken in conjunction with the accompanying drawings, in which are set forth, by way of illustration, various features, objects, and advantages of the present application:

fig. 1 is a schematic structural diagram of a pearl sponge according to an embodiment of the present application, where in fig. 1, 1 is pearl cotton; 10. a main body; 11. a first micro flex wire; 12. a second micro flex wire; 13. an aperture; 110. 120, a stretching unit.

Fig. 2 is a schematic structural diagram of a pearl sponge according to another embodiment of the present application, wherein in fig. 2, pearl wool, 20, a main body, 21, and a first micro-pull thread; 211 and 212, knife cut line; s1, a first distance; s3, a third distance; 22. a second micro flex wire; 221 and 222, knife cut line; s2, a second spacing; s4, a third distance; 23. and (4) a hole.

Fig. 3 is a schematic structural diagram of a die-cutting die for manufacturing pearl wool according to an embodiment of the present application, wherein 3, the die-cutting die, 320, a main body, 31, and a first set of cutters in fig. 3; 311 and 312, tool lines; s1, a first distance; s3, a third distance; 32. a second set of cutters; 321 and 322, a cutter line; s2, a second spacing; s4, a third distance; 33. a third group of cutters; s0, pore.

Fig. 4 is a schematic structural diagram of a stretching unit in the pearl sponge.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are given by way of illustration only. It should be noted that, for convenience of description, only the parts related to the present invention are shown in the drawings. Other parts not explicitly shown or not explicitly described are understood as conventional means or solutions of the prior art, which may achieve the technical effects of the present application in combination with the technical features shown in the present application.

It should be noted that, in the case of no conflict, specific additional technical features in the embodiments and examples in the present application may be combined with or replaced with each other. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

In one aspect, the present application provides a two-way stretchable pearl wool, the pearl wool main part includes: a plurality of first micro flex lines, a second micro flex line, and a plurality of apertures, wherein:

each first micro-drawing line is parallel to each other;

each second micro-pull wire is parallel to each other;

each first micro-pull wire is intersected with all the second micro-pull wires and is intersected in the area where the hole is located; each second micro-pull wire is intersected with all the first micro-pull wires and is intersected in the area where the hole is located;

wherein: the first micro-pull wire is arranged along a first direction, the second micro-pull wire is arranged along a second direction, and the first direction is different from the second direction;

the first micro-drawing line and the second micro-drawing line are both provided with a stretching unit.

Further, the stretching unit includes a first side, a second side and a third side, and all three sides are fold line sides having an obtuse angle; two ends of the third edge are respectively connected with one end of the first edge and one end of the second edge, and the other end of the first edge is an open end; the other end of the second side is also an open end; two adjacent tension units are connected through the first edge of one tension unit and the second edge of the other tension unit and are connected to the area where the hole is located.

Further, the third side includes three obtuse angles.

Further, when the pearl wool body is stretched in the first direction, the first and second sides of the stretching unit on the first micro stay are stretched and rotated about one end thereof based on a force applied by the stretching; and when the pearl wool body is stretched in the second direction, the first side and the second side of the stretching unit on the second micro-drawing line are stretched and rotated about one end thereof based on a force applied by the stretching.

Furthermore, the stretching units of different first micro drawing lines are symmetrically arranged or arranged in the same way; the stretching units on different second micro-drawing lines are symmetrically arranged or arranged in the same way.

Further, the number of the first micro flex lines is different from the number of the second micro flex lines. Alternatively, the number of first micro flex lines is the same as the number of second micro flex lines.

Further, the number of the first micro flex lines is different from the number of the second micro flex lines. Alternatively, the number of first micro flex lines is the same as the number of second micro flex lines.

Further, the hole is arranged in the central area of the intersection point of the first micro-pull wire and the second micro-pull wire, and can be circular, square, rectangular, diamond-shaped or oval.

Further, the area of the horizontal cross-section of the bore is smaller than the area of the horizontal cross-section of the intersection point.

Further, the first micro flex wire intersects the second micro flex wire at an angle α, and 0< α <180 degrees. Preferably, 45< α <145 degrees.

Further, each of the first micro-stay wires and the second micro-stay wires is independently cut, and the width of each of the first micro-stay wires and the second micro-stay wires may be different or equal, and the size of each of the first micro-stay wires and the second micro-stay wires is smaller than that of the hole before the first micro-stay wires and the second micro-stay wires are stretched.

Further, the hole may be a hole having a diameter of several millimeters to several tens of centimeters. Preferably, the pores are millimeter-sized pores having a pore diameter or side length of 5mm to 15 mm.

In another aspect, the present application provides a die-cutting die for preparing bi-directionally stretchable pearl wool, including: the mould main part with set up and be provided with a plurality of first group's cutters, second group's cutter and a plurality of third group's cutter in the mould main part, wherein: each first set of cutters is parallel to each other; each of the second set of cutters is parallel to each other; each first set of tools intersects all of the second set of tools and intersects the region in which the third set of tools is located.

Further, each group of cutter lines comprises a first blade, a second blade and a third blade which cut the stretching unit, and the three blades are broken line blades with obtuse angles; two ends of the third blade are respectively connected with one end of the first blade and one end of the second blade, and the other end of the first blade is an open end; the other end of the second blade is also an open end; and the cutting of two adjacent stretching units is realized by connecting the first blade with the second blade of the other stretching unit and connecting the first blade with the second blade in the area where the third group of cutters is located.

Further, on the third blade is a fold line containing three obtuse angles.

Furthermore, each first group of cutters comprises two cutter lines which are arranged in parallel and have a first distance, and a third distance exists between any two adjacent first groups of cutters; the first pitch may be equal to or different from the third pitch; preferably, the first pitch is smaller than the third pitch.

Each second group of cutters comprises two cutter lines which are arranged in parallel and have a second distance, and a fourth distance exists between any two adjacent second groups of cutters; the second pitch and the fourth pitch may be equal or different; preferably, the second pitch is smaller than the fourth pitch.

Furthermore, each cutter line in the first group of cutters and the second group of cutters is formed by a plurality of blades which are upward in cutting edge and are intersected and connected with the front end and the rear end, wherein the angle of the intersection of the front blade and the rear blade is an obtuse angle.

Each third group of cutters is provided with one or more blades with upward cutting edges and is in a closed hole shape as a whole.

In a die-cutting die, the number of the first group of cutters is different from that of the second group of cutters. Optionally, the number of tools of the first set is the same as the number of tools of the second set.

The third group of cutters is arranged in the central area of the intersection point of the first group of cutters and the second group of cutters, and the cross section of the hole presented by the third group of cutters can be circular, square, rectangular, rhombic, oval or other shapes.

The horizontal cross-sectional area of each of the third set of cutters is less than the horizontal cross-sectional area of the intersection point.

The first set of cutters intersects the second set of cutters at an angle alpha, and 0< alpha <180 degrees.

The first pitch in any one of the first set of tools and the second pitch in the second set of tools may be equal or different.

The third pitch of two adjacent first set of cutters and the fourth pitch of two adjacent second set of cutters may be equal or different.

The horizontal cross-sections of each of the third set of cutters are each independently cylindrical or spherical. Preferably, the cross-section of each third set of cutters may be a millimeter-sized hole having a cross-section with a diameter or side length of 5mm to 15 mm.

FIG. 1 is a schematic structural diagram of a bi-directional stretchable pearl sponge according to an embodiment of the present application; specifically, as shown in fig. 1, the pearl sponge 1 has a structure in which a plurality of first micro-flex wires 11, second micro-flex wires 12, and a plurality of holes 13 are provided on a main body, wherein: each first micro-flex wire 11 is parallel to each other; each second micro-flex wire 12 is parallel to each other; each first micro flex line 11 intersects all second micro flex lines 12 and intersects the area of the hole 13. Each second micro-flex wire 12 intersects all the first micro-flex wires 11 and intersects the area of the hole 13; wherein: the first micro-pull wire is arranged along a first direction, the second micro-pull wire is arranged along a second direction, and the first direction is different from the second direction; the first micro-flex 11 and the second micro-flex 12 are provided with stretching units 110 and 120.

As shown in fig. 1, the number of the first micro flex lines 11 is 8, and the number of the second micro flex lines 12 is 9, which are different from each other. The hole 13 is provided in the central region of the intersection 13 of the first and second micro flex wires 11, 12, and is shown as a square with an area smaller than the area of the intersection.

The stretching unit comprises a first side, a second side and a third side, and all the three sides are broken line sides with obtuse angles; two ends of the third edge are respectively connected with one end of the first edge and one end of the second edge, and the other end of the first edge is an open end; the other end of the second side is also an open end; two adjacent tension units are connected through the first edge of one tension unit and the second edge of the other tension unit and are connected to the area where the hole is located.

Further, the third side includes three obtuse angles.

Further, the area of the horizontal cross-section of the bore is smaller than the area of the horizontal cross-section of the intersection point.

Further, the first micro-flex wire and the second micro-flex wire intersect at an angle α, and α is 90 degrees.

Further, the first micro flex lines and the second micro flex lines have the same width.

Further, the pores may be milli-scale micropores having a pore size of 5mm to 15 mm.

It is apparent from the pearl wool structure shown in fig. 1 that the biaxial stretching properties are substantially the same.

Fig. 2 is a schematic structural diagram of a pearl sponge according to another embodiment of the present application. As shown in fig. 2, the pearl sponge 2 has a structure in which a plurality of first micro-flex lines 21, second micro-flex lines 22, and a plurality of holes 23 are provided on a main body 20, wherein: each of the first micro flex lines 21 are parallel to each other with adjacent knife cut lines 211 and 212 having spacings S1 and S3, S1 being less than S3; each second micro flex wire 22 is parallel to each other and adjacent knife cut lines 221 and 222 are spaced apart at distances S2 and S4, S2 being less than S4; each first micro flex line 21 intersects all second micro flex lines 22 and intersects the area where the hole 23 is located (all intersecting areas are not explicitly shown); the stretching units 110, 120 provided on the first micro flex 11 and the second micro flex 12 have a size before stretching that is significantly smaller than the size of the hole 13.

As shown in fig. 2, the number of the first micro flex lines 21 is 10, and the number of the second micro flex lines 22 is 12, which are different from each other. The hole 23 is provided in the central region of the intersection point of the first micro flex wire 11 and the second micro flex wire 12, and the hole is shown as a square with an area smaller than the whole area of the intersection region.

Fig. 3 is a die cutting die for preparing biaxially stretchable pearl wool according to an embodiment of the present application, and particularly, corresponds to the structure of pearl wool shown in fig. 2. The die cutting die 3 includes: a body 30, and a plurality of first set of cutters 31, a second set of cutters 32, and a plurality of three sets of cutters 33 disposed within the body 30, wherein: each first set of cutters 31 is parallel to each other; each second set of cutters 32 is parallel to each other; each first set of tools intersects all of the second set of tools and intersects the region in which the three sets of tools 33 are located.

Each first group of cutters 31 comprises two cutter lines 311 and 312 arranged in parallel and having a first spacing S1, and a third spacing S3 exists between any two adjacent first group of cutters 31; the first spacing S1 may be unequal to the third spacing S3, and the first spacing S1 is less than the third spacing S3.

Each second group of cutters 32 comprises two cutter lines 321 and 322 which are arranged in parallel and have a second spacing S2, and a fourth spacing S4 exists between any two adjacent second groups of cutters 32; the second spacing S2 and the fourth spacing S4 may not be equal; and the second spacing S2 is less than the fourth spacing S4.

Further, as can be seen from fig. 3, each of the cutter lines of the first group of cutters 31 and the second group of cutters 32 is formed by a plurality of blades with upward cutting edges and intersecting and connecting front and rear ends, wherein the angle at the intersection of the front and rear blades is an obtuse angle.

Each third group of cutters 33 is provided with one or more blades with the cutting edge upward and is generally in the shape of a closed hole S0. In the die-cutting die shown in fig. 2, the number of the first group of knives 31 is 6, and the spacing S1 of each first group of knives is equal, the number of the second group of knives 32 is 5, and the spacing S2 of each second group of knives is equal, and both are the same.

The third set of cutters 33 is arranged in a central region of the intersection of the first set of cutters 31 and the second set of cutters 32, the central cross-section of the third set of cutters 33 being square.

The cross-sectional area of each third set of cutters is smaller than the cross-section of the region of the intersection site, and obviously the horizontal cross-sectional area of the surrounding bore of the third set of cutters is smaller than the horizontal cross-sectional area of the region of the intersection site. In order to avoid the connection between the first micro drawing line and the second micro drawing line of the pearl wool being cut off, it can be understood that the third group of cutters are all arranged in the area where the first group of cutters and the second group of cutters intersect and are not positioned on the edge line of the intersection point.

Each first set of cutters 31 intersects each second set of cutters 32 at an angle α, and α is 90 degrees.

The first set of cutters 31 and the second set of cutters 32 in fig. 3 may each independently be sets of cutters of equal cross-sectional dimensions.

The horizontal cross-section of the blades of each third group of cutters may be a square with moderate sides, depending on the application. Preferably, the horizontal cross section defined by the blades of each third group of cutters may be a millimeter-sized hole, and the side length of the square may be 5mm to 15 mm.

Fig. 4 is a schematic structural diagram of a stretching unit in the pearl sponge, and it can be clearly seen that the stretching unit is in a shape before being stretched.

The above description is only a preferred embodiment of the present application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of protection covered by the present application is not limited to the embodiments with a specific combination of the features described above, but also covers other embodiments with any combination of the features described above or their equivalents without departing from the scope of the present application. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (9)

1. The bi-directionally stretchable pearl wool is characterized in that the pearl wool main body comprises: a plurality of first micro flex lines, a second micro flex line, and a plurality of apertures, wherein:

each of the first micro-flex wires is parallel to each other;

each of the second micro-flex wires is parallel to each other;

each first micro-pull wire is intersected with all the second micro-pull wires and is intersected in the area where the hole is located; each second micro-pull wire is intersected with all the first micro-pull wires and is intersected in the area where the hole is located;

wherein: the first micro-pull wire is arranged along a first direction, the second micro-pull wire is arranged along a second direction, and the first direction is different from the second direction;

the first micro-flex wire and the second micro-flex wire are provided with a plurality of stretching units.

2. The pearl wool according to claim 1, wherein said stretching unit comprises a first side, a second side and a third side, each of which is a fold line side having an obtuse angle; two ends of the third edge are respectively connected with one end of the first edge and one end of the second edge, and the other end of the first edge is an open end; the other end of the second side is also an open end; and the two adjacent stretching units are connected through the first edge of one stretching unit and the second edge of the other stretching unit and are connected to the area where the hole is located.

3. The pearl wool according to claim 2, wherein said third side includes three obtuse angles.

4. The pearl wool according to claim 2, wherein when the pearl wool body is stretched in a first direction, the first and second sides of the stretching unit on the first micro stay are stretched and rotated about one end thereof based on a force applied by the stretching; and

when the pearl wool body is stretched in a second direction, the first side and the second side of the stretching unit on the second micro-pull thread are stretched and rotated about one end thereof based on a force applied by the stretching.

5. The pearl wool according to claim 2, wherein the stretching units of different first micro-stretch threads are arranged symmetrically or identically; the stretching units on different second micro-stretching wires are symmetrically arranged or arranged in the same way.

6. The pearl wool according to claim 1, wherein said hole is provided in the central region of the intersection point of said first micro-flex and said second micro-flex, and may be circular, square, rectangular, diamond, or oval.

7. The pearl wool according to claim 6, wherein the area of the horizontal cross section of said hole is smaller than the area of the horizontal cross section of said intersection point.

8. The pearl wool according to claim 1, wherein said first micro drawing line intersects said second micro drawing line at an angle α, 45< α <145 degrees.

9. The pearl wool according to claim 1, wherein said stretching unit provided on each of said first micro-stay thread and said second micro-stay thread is smaller than said hole.

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