A method for producing multipacks of containers includes placing adhesive spots on surfaces of the containers. At least two kinds of adhesives are used, both of which plastic melt adhesives that melt as a result of exposure to heat and that develop cohesion after cooling. After placing the adhesive spots, the containers are connected to each other using the adhesive spots so as to form a multipack.

Provided is a container including a container body and an image on the container body. The image includes a plurality of dented portions and non-dented portions. A visibility value of the image represented by Mathematical formula (1) below is greater than or equal to a predetermined value.
Visibility value=b.sub.0.Math.L*.sub.0.Math.(1exp(b.sub.1.Math.L*))Mathematical formula (1) In Mathematical formula (1), L*.sub.0 represents a luminosity of the image. L* represents a difference between the luminosity of the image and a luminosity of any other portion than the image, b.sub.0 represents a positive real number, and b.sub.1 represents a negative real number.

Provided is a container including a container body and an image on the container body. The image includes a plurality of dented portions and non-dented portions. A visibility value of the image represented by Mathematical formula (1) below is greater than or equal to a predetermined value.
Visibility value=b.sub.0.Math.L*.sub.0.Math.(1exp(b.sub.1.Math.L*))Mathematical formula (1) In Mathematical formula (1), L*.sub.0 represents a luminosity of the image. L* represents a difference between the luminosity of the image and a luminosity of any other portion than the image, b.sub.0 represents a positive real number, and b.sub.1 represents a negative real number.

A system includes a feeder apparatus to transfer a blank to each of the groups and an applicator apparatus to apply the blank to each of the groups as the articles move along a travel path. The feeder apparatus includes a plurality of grippers to engage the blank. The feeder apparatus includes a guide to position each of the grippers along an orbital path during rotation such that each of the grippers has at least two radial positions along the orbital path and that orbital motion of each of the grippers is momentary paused at a first radial position to engage the blank. The applicator apparatus includes first applicator tools to press the blanks onto alternating first ones of the groups and second applicator tools to press the blanks onto alternating second ones of the groups as the articles move along the travel path.

A system includes a feeder apparatus to transfer a blank to each of the groups and an applicator apparatus to apply the blank to each of the groups as the articles move along a travel path. The feeder apparatus includes a plurality of grippers to engage the blank. The feeder apparatus includes a guide to position each of the grippers along an orbital path during rotation such that each of the grippers has at least two radial positions along the orbital path and that orbital motion of each of the grippers is momentary paused at a first radial position to engage the blank. The applicator apparatus includes first applicator tools to press the blanks onto alternating first ones of the groups and second applicator tools to press the blanks onto alternating second ones of the groups as the articles move along the travel path.

A bare bottle pre-grouping and stacking device includes a bottle feeding and conveying mechanism, a grouping and conveying mechanism, a stacking and conveying mechanism, and a pre-grouping mechanism. The bottle feeding and conveying mechanism is configured to transport multiple columns of bare bottles. The grouping and conveying mechanism is disposed downstream of the bottle feeding and conveying mechanism. The stacking and conveying mechanism is disposed at an outlet end of the grouping and conveying mechanism and has the same conveying direction as the grouping and conveying mechanism. The pre-grouping mechanism includes a mechanical arm and a pre-grouping clamp.