WO2015154281A1 - Melt adhesion method for paper container - Google Patents

Melt adhesion method for paper container Download PDF

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Publication number
WO2015154281A1
WO2015154281A1 PCT/CN2014/075073 CN2014075073W WO2015154281A1 WO 2015154281 A1 WO2015154281 A1 WO 2015154281A1 CN 2014075073 W CN2014075073 W CN 2014075073W WO 2015154281 A1 WO2015154281 A1 WO 2015154281A1
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WO
WIPO (PCT)
Prior art keywords
paper
coating layer
plastic coating
paper container
melt
Prior art date
Application number
PCT/CN2014/075073
Other languages
French (fr)
Chinese (zh)
Inventor
张开有
Original Assignee
张开有
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 张开有 filed Critical 张开有
Priority to PCT/CN2014/075073 priority Critical patent/WO2015154281A1/en
Publication of WO2015154281A1 publication Critical patent/WO2015154281A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/64—Lids
    • B65D5/66—Hinged lids
    • B65D5/6626—Hinged lids formed by folding extensions of a side panel of a container body formed by erecting a "cross-like" blank
    • B65D5/665—Hinged lids formed by folding extensions of a side panel of a container body formed by erecting a "cross-like" blank the lid being held in closed position by self-locking integral flaps or tabs
    • B65D5/6661—Flaps provided over the total length of the lid edge opposite to the hinge
    • B65D5/6664—Flaps provided over the total length of the lid edge opposite to the hinge combined with flaps or tabs provided at the side edges of the lid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • B65D5/48—Partitions
    • B65D5/48024—Partitions inserted
    • B65D5/48048—Single partition formed by folding one or more blanks and provided with flaps fixed to or maintained by parts of the container body

Definitions

  • the invention relates to a method of melting a paper container.
  • the high temperature will cause the paper to soften and deform, make the joint uneven, the adhesive is not sure, or even can not be bonded, which not only affects the yield, but also makes it easier to make A gap is formed at the joint to cause leakage, and the process of directly heating to 500 ° C from the normal temperature deteriorates the deformation and adhesion of the paper. In addition, the heating time is long, the energy consumption is large, and the production efficiency is poor. .
  • the plastic coating layer is made of PP (polypropylene) or PET (polyethylene terephthalate)
  • PP polypropylene
  • PET polyethylene terephthalate
  • the thermal decomposition of the plastic coating layer is caused at a high temperature of 500 ° C, which causes the plastic to drip.
  • the film loses its tack and cannot bond at all.
  • a primary object of the present invention is to provide a method of melting a paper container which can prevent the paper from being deformed by high temperature and which can reduce the chance of leakage due to false adhesion.
  • the present invention provides a method of melting a paper container comprising the following steps:
  • a raw paper material is prepared, the raw paper material comprising a first portion and a second portion, wherein at least the surface of the first portion has a plastic coating layer.
  • the preheating of the first portion is non-contact.
  • the first portion and the second portion are subjected to fusion bonding by contact heating.
  • the step (3) when the step (3) is performed, heating is performed by a high-frequency heating device.
  • the heating when the step (3) is performed, the heating is performed by the ultrasonic heating device.
  • the material of the plastic coating layer is selected from the group consisting of polypropylene, polyethylene, polystyrene and polyethylene terephthalate.
  • the invention preheats the plastic coating layer, and the second part can be fused to the first part at a lower temperature, which not only does not cause the paper to be deformed due to high temperature, but also reduces the heating time and saves the heating cost. More importantly, high temperature melting can be avoided to cause the plastic coating layer to decompose and cause false adhesion to ensure that the first part and the second part are combined without leakage.
  • Figure 1 is a flow chart of the steps of the present invention.
  • Figure 2 is a schematic view of a first embodiment of the present invention.
  • Figure 2A is a partial cross-sectional view of Figure 2.
  • Figure 3 is an exploded perspective view of a second embodiment of the present invention.
  • Figure 4 is a perspective view of a second embodiment of the present invention.
  • Figure 5 is a partial cross-sectional view showing a second embodiment of the present invention.
  • the present invention provides a method for melting a paper container, comprising the following steps: 1. Preparing a raw paper material, the raw paper material comprising a first portion and a second portion, wherein at least the surface of the first portion has a plastic coating layer, the material of the plastic coating layer is selected from
  • the original paper material 10 is cut into a shape of a paper cup, and the original paper material 10 has the plastic coating layer 111 on at least one side thereof, and the first portion 11 and the second portion 12 are respectively located on the base paper.
  • Both sides of the material 10. 3 to 5 disclose a raw paper 10' for making a compartment lunch box, the original paper 10' comprising a previously separated partition plate and a base, the base having the first portion 11', the partition The bottom of the plate has the second portion 12'. Therefore, the first portion and the second portion are not limited to being located on the same paper object, and the first portion and the second portion are not located on two different paper objects in advance.
  • the first part is preheated at 80 ° C ⁇ 200 ° C S1: The first part is preheated at a temperature between 80 ° C and 200 ° C, so that the surface temperature of the first part is about 70 °C ⁇ 200 ° C, preferably, the first portion is preheated by non-contact heating.
  • the second portion is pressed to the first portion S2 at a temperature of 260 ° C to 400 ° C: the second portion is attached to the first portion and is carried out at a temperature between 260 ° C and 400 ° C.
  • the fusion bonding is performed to melt the plastic coating layer to closely bond the first portion and the second portion to each other.
  • the first portion 11 and the second portion 12 are closely adhered to each other by the molten plastic coating layer 111, and can be further processed into a finished paper container;
  • the first portion 1 ⁇ is also bonded to the second portion 12' by the plastic coating layer 11 ,, and can be further prepared into a finished paper container.
  • the second portion is pressed against the first portion by contact heating, preferably by a high-frequency or ultrasonic heating method.
  • Paper container S3 The raw paper material which has been crimped and pressed is made into a paper container, such as the cup paper container 20 in Fig. 2 and the paper box paper container 20' in Figs. 3 to 4.
  • the paper can be prevented from being deformed by the influence of high temperature, avoiding false adhesion, preventing the plastic coating layer from being thermally decomposed due to high temperature and losing the viscosity, and reducing the heating time and cost, and the prepared paper container has a flat appearance and good quality.
  • the rate is high, and the joint is firmly bonded and not easily detached. It is also not easy to cause leakage due to gaps caused by paper deformation, which is very effective.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Making Paper Articles (AREA)

Abstract

A melt adhesion method for a paper container (20, 20'), comprising the following steps: preparing a raw paper material (10, 10') comprising a first portion (11, 11') and a second portion (12, 12'), wherein at least the surface of the first portion (11, 11') is provided with a plastic coating layer (111, 111'); preheating the first portion (11, 11') at a temperature of between 80°C and 200°C; adhering the second portion (12, 12') onto the first portion (11, 11') and performing melt-adhesion laminating at a temperature of between 260°C and 400°C to melt the plastic coating layer (111, 111') such that the first portion (11, 11') and the second portion (12, 12') are tightly bonded to each other; and manufacturing the raw paper material (10, 10') on which the melt-adhesion laminating is completed into a paper container (20, 20'). The melt adhesion method can avoid the paper deformation due to a high temperature, can ensure that the plastic coating layer (111, 111') has a good adhesiveness without being damaged by the high temperature, and can save more heating time and cost.

Description

纸容器的熔贴方法 技术领域  Melting method of paper container
本发明涉及一种纸容器的熔贴方法。  The invention relates to a method of melting a paper container.
背景技术 Background technique
习知的纸制容器，接合处常利用原有用以防水的塑料淋膜层的熔融 进行粘合，如中国台湾专利 M441372、M445398及 M375054等所揭者。 一般而言， 欲粘合的部位须通过高周波、 超音波或热风的方式以至少 500°C的高温进行熔压贴合， 才足以将淋膜层充分熔融而贴合， 然而， 500°C的高温常造成假性粘着的问题， 使接合处易发生渗漏， 高温更会 造成纸张软化变形， 使接合处不平整、 粘合不确实、 甚至无法粘合的状 况， 不仅影响良率， 更易使接合处产生缝隙而造成渗漏， 且自常温直接 缓缓加温至 500°C的过程使纸张变形与粘合不确实的状况更加恶化， 另 外， 加热时间长， 能源耗费大、 生产效率不佳。  Conventional paper containers, where joints are often bonded by melting of the original plastic film layer for waterproofing, such as those disclosed in Taiwanese patents M441372, M445398 and M375054. In general, the part to be bonded must be melt-bonded at a high temperature of at least 500 ° C by means of high frequency, ultrasonic or hot air, which is sufficient to fully melt and bond the coating layer, however, at 500 ° C High temperature often causes the problem of pseudo-adhesion, which makes the joint easy to leak. The high temperature will cause the paper to soften and deform, make the joint uneven, the adhesive is not sure, or even can not be bonded, which not only affects the yield, but also makes it easier to make A gap is formed at the joint to cause leakage, and the process of directly heating to 500 ° C from the normal temperature deteriorates the deformation and adhesion of the paper. In addition, the heating time is long, the energy consumption is large, and the production efficiency is poor. .
另一方面， 当塑料淋膜层为 PP (聚丙烯） 或 PET (聚对苯二甲酸 乙二酯） 材质时， 在 500°C高温下会造成塑料淋膜层的热分解， 进而造 成塑料淋膜层失去粘性， 根本无法粘合。  On the other hand, when the plastic coating layer is made of PP (polypropylene) or PET (polyethylene terephthalate), the thermal decomposition of the plastic coating layer is caused at a high temperature of 500 ° C, which causes the plastic to drip. The film loses its tack and cannot bond at all.
因此， 如何进行熔贴以避免纸张变形， 又可使塑料淋膜层充分熔融 粘合， 不致产生假性粘着现象， 并降低加热的成本， 成为业界亟待解决 的课题。  Therefore, how to carry out the fusion to avoid deformation of the paper, and the plastic coating layer can be fully melted and bonded without causing a pseudo-adhesion phenomenon and reducing the cost of heating, which has become an urgent problem to be solved in the industry.
发明内容 Summary of the invention
本发明的主要目的在于提供一种纸容器的熔贴方法，能避免纸张因 高温变形， 并能减少因假性粘着而渗漏的机会。  SUMMARY OF THE INVENTION A primary object of the present invention is to provide a method of melting a paper container which can prevent the paper from being deformed by high temperature and which can reduce the chance of leakage due to false adhesion.
为达成上述目的，本发明提供一种纸容器的熔贴方法，包含以下步 骤：  In order to achieve the above object, the present invention provides a method of melting a paper container comprising the following steps:
( 1 ) 制备一原纸材， 该原纸材包含一第一部位与一第二部位， 其 中至少该第一部位表面具有一塑料淋膜层。  (1) A raw paper material is prepared, the raw paper material comprising a first portion and a second portion, wherein at least the surface of the first portion has a plastic coating layer.
( 2) 对该第一部位以介于 80°C至 200 °C之间的温度进行预热。 (2) Preheating the first portion at a temperature between 80 ° C and 200 ° C.
( 3 )将该第二部位贴合于该第一部位上并以 260°C至 400°C之间的 温度进行熔贴压合，使该塑料淋膜层熔化而将该第一部位与该第二部位 彼此紧密粘合。 ( 4) 将熔贴压合完毕的原纸材制成一纸容器。 (3) bonding the second portion to the first portion and performing a fusion bonding at a temperature between 260 ° C and 400 ° C to melt the plastic coating layer to bond the first portion to the first portion The second portions are closely bonded to each other. (4) Make the raw paper that has been crimped and pressed into a paper container.
其中， 在进行所述步骤 （2) 时， 对所述第一部位的预热为非接触 式。  Wherein, when the step (2) is performed, the preheating of the first portion is non-contact.
其中， 在进行所述步骤 （3 ) 时， 以接触式加热对所述第一部位与 所述第二部位进行熔贴压合。  Wherein, in the step (3), the first portion and the second portion are subjected to fusion bonding by contact heating.
其中， 在进行所述步骤 （3 ) 时， 以高周波加热装置进行加热。 其中， 在进行所述步骤 （3 ) 时， 以超音波加热装置进行加热。 其中， 所述塑料淋膜层的材料选自由聚丙烯、 聚乙烯、 聚苯乙烯及 聚对苯二甲酸乙二酯所组成的群组。  Here, when the step (3) is performed, heating is performed by a high-frequency heating device. Here, when the step (3) is performed, the heating is performed by the ultrasonic heating device. Wherein, the material of the plastic coating layer is selected from the group consisting of polypropylene, polyethylene, polystyrene and polyethylene terephthalate.
本发明的优点在于：  The advantages of the invention are:
本发明通过对塑料淋膜层进行预热，第二部位便能以较低的温度熔 贴至第一部位， 不仅不会造成纸张因高温而变形， 更可缩减加热时间， 节省加热的成本， 更重要的是， 可避免高温熔贴使塑料淋膜层分解造成 假性粘着， 以确保第一部位与第二部位间确实结合而不致渗漏。  The invention preheats the plastic coating layer, and the second part can be fused to the first part at a lower temperature, which not only does not cause the paper to be deformed due to high temperature, but also reduces the heating time and saves the heating cost. More importantly, high temperature melting can be avoided to cause the plastic coating layer to decompose and cause false adhesion to ensure that the first part and the second part are combined without leakage.
附图说明 DRAWINGS
图 1为本发明的步骤流程图。  Figure 1 is a flow chart of the steps of the present invention.
图 2为本发明第一实施例的示意图。  Figure 2 is a schematic view of a first embodiment of the present invention.
图 2A为图 2的局部剖面图。  Figure 2A is a partial cross-sectional view of Figure 2.
图 3为本发明第二实施例的立体分解图。  Figure 3 is an exploded perspective view of a second embodiment of the present invention.
图 4为本发明第二实施例的立体图。  Figure 4 is a perspective view of a second embodiment of the present invention.
图 5为本发明第二实施例的局部剖面图。  Figure 5 is a partial cross-sectional view showing a second embodiment of the present invention.
附图标记  Reference numeral
S1 : 第一部位以 80°C ~200°C预热  S1 : The first part is preheated at 80 ° C ~ 200 ° C
S2: 第二部位以 260°C ~400°C熔贴压合至第一部位  S2: The second part is pressed to the first part at 260 ° C ~ 400 ° C
S3： 制成纸容器  S3: made into paper container
10、 10'： 原纸材  10, 10': Original paper
11、 11'： 第一部位  11, 11': the first part
111、 111'： 塑料淋膜层  111, 111': plastic coating layer
12、 12'： 第二部位  12, 12': the second part
20、 20'： 纸容器  20, 20': paper container
具体实施方式 以下仅以实施例说明本发明可能的实施态样，然并非用以限制本发 明所欲保护的范畴， 合先叙明。 detailed description The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the present invention.
请参考图 1， 本发明提供一种纸容器的熔贴方法， 包含以下步骤： 一、 制备一原纸材， 该原纸材包含一第一部位与一第二部位， 其中 至少该第一部位表面具有一塑料淋膜层， 该塑料淋膜层的材料选自由 Referring to FIG. 1 , the present invention provides a method for melting a paper container, comprising the following steps: 1. Preparing a raw paper material, the raw paper material comprising a first portion and a second portion, wherein at least the surface of the first portion has a plastic coating layer, the material of the plastic coating layer is selected from
PP (聚丙烯） 、 PE (聚乙烯） 、 PS (聚苯乙烯） 及 PET (聚对苯二甲 酸乙二酯） 所组成的群组； 举例来说， 如图 2及图 2A所示， 该原纸材 10被裁切成可制成一纸制杯具的形状， 该原纸材 10的至少其中一面具 有该塑料淋膜层 111， 而该第一部位 11与该第二部位 12分别位于该原 纸材 10的两侧。 而图 3至图 5则揭示了供制成分格餐盒的原纸材 10'， 该原纸材 10'包含原先分离的分隔板与底座，该底座具有该第一部位 11'， 该分隔板的底部具有该第二部位 12'。 因此， 该第一部位与该第二部位 并不限于位于同一纸材物件上，该第一部位与该第二部位预先位于两不 同的纸材物件上亦无不可。 a group consisting of PP (polypropylene), PE (polyethylene), PS (polystyrene), and PET (polyethylene terephthalate); for example, as shown in Figure 2 and Figure 2A, The original paper material 10 is cut into a shape of a paper cup, and the original paper material 10 has the plastic coating layer 111 on at least one side thereof, and the first portion 11 and the second portion 12 are respectively located on the base paper. Both sides of the material 10. 3 to 5 disclose a raw paper 10' for making a compartment lunch box, the original paper 10' comprising a previously separated partition plate and a base, the base having the first portion 11', the partition The bottom of the plate has the second portion 12'. Therefore, the first portion and the second portion are not limited to being located on the same paper object, and the first portion and the second portion are not located on two different paper objects in advance.
二、第一部位以 80°C ~200°C预热 S1 : 对该第一部位以介于 80°C至 200 °C之间的温度进行预热， 使第一部位的表面温度约为 70°C ~200°C， 较佳者， 以非接触式加热方式对该第一部位进行预热。  Second, the first part is preheated at 80 ° C ~ 200 ° C S1: The first part is preheated at a temperature between 80 ° C and 200 ° C, so that the surface temperature of the first part is about 70 °C ~ 200 ° C, preferably, the first portion is preheated by non-contact heating.
三、 第二部位以 260°C ~400°C熔贴压合至第一部位 S2: 将该第二 部位贴合于该第一部位上并以 260°C至 400°C之间的温度进行熔贴压合， 使该塑料淋膜层熔化而将该第一部位与该第二部位彼此紧密粘合。举例 来说， 如图 2及图 2A所示， 该第一部位 11与该第二部位 12通过熔融 的塑料淋膜层 111彼此紧密粘合， 而可进一步供制造成纸容器成品； 于 图 3至图 5中，该第一部位 1 Γ也与该第二部位 12'藉该塑料淋膜层 11 Γ 彼此粘合， 而能进一步供制成纸容器成品。 于本发明的主要实施例中， 以接触式加热的方式将该第二部位贴压于该第一部位上， 较佳者， 利用 高周波或超音波的加热方式予以加热熔贴。  3. The second portion is pressed to the first portion S2 at a temperature of 260 ° C to 400 ° C: the second portion is attached to the first portion and is carried out at a temperature between 260 ° C and 400 ° C. The fusion bonding is performed to melt the plastic coating layer to closely bond the first portion and the second portion to each other. For example, as shown in FIG. 2 and FIG. 2A, the first portion 11 and the second portion 12 are closely adhered to each other by the molten plastic coating layer 111, and can be further processed into a finished paper container; In Fig. 5, the first portion 1 Γ is also bonded to the second portion 12' by the plastic coating layer 11 ,, and can be further prepared into a finished paper container. In a main embodiment of the present invention, the second portion is pressed against the first portion by contact heating, preferably by a high-frequency or ultrasonic heating method.
四、 制成纸容器 S3 : 将熔贴压合完毕的原纸材制成一纸容器， 如 图 2中的杯具纸容器 20与图 3至图 4中的餐盒纸容器 20'。  4. Paper container S3: The raw paper material which has been crimped and pressed is made into a paper container, such as the cup paper container 20 in Fig. 2 and the paper box paper container 20' in Figs. 3 to 4.
通过上述方法， 可避免纸张受到高温影响而变形、 避免假性粘着、 防止塑料淋膜层因高温而热分解进而失去粘性、并能减少加热时间与成 本，所制成的纸容器外观平整、良率较高，且接合处粘合稳固不易脱离、 也不易因纸张变形造成缝隙而引起渗漏的现象， 极具进步之效 < Through the above method, the paper can be prevented from being deformed by the influence of high temperature, avoiding false adhesion, preventing the plastic coating layer from being thermally decomposed due to high temperature and losing the viscosity, and reducing the heating time and cost, and the prepared paper container has a flat appearance and good quality. The rate is high, and the joint is firmly bonded and not easily detached. It is also not easy to cause leakage due to gaps caused by paper deformation, which is very effective.

Claims

权利要求书 claims
1、 一种纸容器的熔贴方法， 其特征在于， 包含以下步骤： 1. A method for fusing paper containers, which is characterized in that it includes the following steps:
( 1 ) 制备一原纸材， 该原纸材包含一第一部位与一第二部位， 其 中至少该第一部位表面具有一塑料淋膜层； (1) Prepare a base paper material, which includes a first part and a second part, wherein at least the first part has a plastic coating layer on its surface;
( 2) 对该第一部位以介于 80°C至 200°C之间的温度进行预热； (2) Preheat the first part at a temperature between 80°C and 200°C;
( 3 )将该第二部位贴合于该第一部位上并以 260°C至 400°C之间的 温度进行熔贴压合，使该塑料淋膜层熔化而将该第一部位与该第二部位 彼此紧密粘合； (3) Laminate the second part to the first part and perform melting and lamination at a temperature between 260°C and 400°C to melt the plastic coating layer and separate the first part and the first part. The second parts are tightly bonded to each other;
( 4) 将熔贴压合完毕的原纸材制成一纸容器。 (4) Make a paper container from the fused and pressed raw paper material.
2、 如权利要求 1所述的纸容器的熔贴方法， 其特征在于， 在进行 所述步骤 （2) 时， 对所述第一部位的预热为非接触式。 2. The paper container welding method according to claim 1, characterized in that, when performing the step (2), the preheating of the first part is non-contact.
3、 如权利要求 1所述的纸容器的熔贴方法， 其特征在于， 在进行 所述步骤 （3 ) 时， 以接触式加热对所述第一部位与所述第二部位进行 熔贴压合。 3. The fusion bonding method of paper containers according to claim 1, characterized in that, when performing step (3), the first part and the second part are fused and pressed by contact heating. combine.
4、 如权利要求 1所述的纸容器的熔贴方法， 其特征在于， 在进行 所述步骤 （3 ) 时， 以高周波加热装置进行加热。 4. The fusion bonding method of paper containers according to claim 1, characterized in that, when performing the step (3), a high-frequency heating device is used for heating.
5、 如权利要求 1所述的纸容器的熔贴方法， 其特征在于， 在进行 所述步骤 （3 ) 时， 以超音波加热装置进行加热。 5. The paper container welding method according to claim 1, characterized in that, when performing the step (3), an ultrasonic heating device is used for heating.
6、 如权利要求 1所述的纸容器的熔贴方法， 其特征在于， 所述塑 料淋膜层的材料选自由聚丙烯、聚乙烯、聚苯乙烯及聚对苯二甲酸乙二 酯所组成的群组。 6. The fusion bonding method of paper containers according to claim 1, characterized in that the material of the plastic coating layer is selected from the group consisting of polypropylene, polyethylene, polystyrene and polyethylene terephthalate. group.
PCT/CN2014/075073 2014-04-10 2014-04-10 Melt adhesion method for paper container WO2015154281A1 (en)

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US10507970B2 (en) 2013-03-07 2019-12-17 Mondelez Uk R&D Limited Confectionery packaging and method of opening
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US10479550B2 (en) 2012-03-26 2019-11-19 Kraft Foods R & D, Inc. Packaging and method of opening
US10507970B2 (en) 2013-03-07 2019-12-17 Mondelez Uk R&D Limited Confectionery packaging and method of opening
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